KR20220041837A - Method and apparatus for receiving a physical downlink control channel - Google Patents

Abstract

The present disclosure relates to a communication method and system for converging a 5G communication system supporting a data rate higher than that of a 4 ^th -Generation (4G) system using Internet of Things (IOT) technology. The present disclosure can be applied to intelligent services based on IoT-related technology and 5G communication technology, such as smart home, smart building, smart city, smart car, connected car, healthcare, digital education, smart retail, security and safety services. there is. The present disclosure provides a method and apparatus for receiving a physical downlink control channel in a wireless communication network, and a method and apparatus for determining a resource.

Description

Method and apparatus for receiving a physical downlink control channel

The present disclosure relates to the field of wireless communication technology, and more particularly, to a method and apparatus for receiving a physical downlink control channel in a wireless communication network, and more particularly, to a method and apparatus for determining resources.

Efforts are being made to develop an improved 5G or pre-5G communication system to meet the increasing demand for wireless data traffic after the commercialization of the 4G communication system. For this reason, the 5G or pre-5G communication system is called a 'Beyond 4G network' or a 'Post LTE system'. To achieve higher data rates, 5G communication systems are considered to be implemented in higher frequency (mmWave) bands (eg, 60 GHz bands). To reduce radio wave propagation loss and increase transmission distance, in 5G communication systems, beamforming, massive MIMO, Full Dimensional MIMO (FD-MIMO), and array antenna ), analog beam forming, and large scale antenna technologies are being discussed. In addition, for system network improvement, in the 5G communication system, an improved small cell (advanced small cell), cloud radio access network (cloud RAN), ultra-dense network (ultra-dense network), D2D (device- Technologies such as to-device communication, wireless backhaul, mobile network, cooperative communication, Coordinated Multi-Points (CoMP), and reception end interference cancellation are being developed. In the 5G system, hybrid frequency shift keying and quadrature amplitude modulation (FQAM) and sliding window superposition coding (SWSC), which are advanced coding modulation (ACM) technologies, and filter bank multi carrier (FBMC), which are advanced access technologies, NOMA (non-orthogonal multiple access), and sparse code multiple access (SCMA) are being developed.

The Internet, a human-centered connection network where humans generate and consume information, is now evolving into an Internet of Things (IOT), in which distributed entities such as things exchange and process information without human intervention. The Internet of Everything (IoE), which combines IoT technology and big data processing technology through connection with a cloud server, has emerged. As technology elements such as “sensing technology”, “wired/wireless communication and network infrastructure”, “service interface technology” and “security technology” for IoT implementation are required, sensor networks, machine-to-machine (M2M) communication , MTC (Machine Type Communication), etc. are being studied recently. This IoT environment can provide intelligent Internet technology services that create new values in human life by collecting and analyzing data generated between connected objects. Through the convergence and integration between existing information technology (IT) and various industrial applications, IoT is the It can be applied to various fields.

Accordingly, various attempts are being made to apply the 5G communication system to the IoT network. For example, technologies such as sensor networks, Machine Type Communication (MTC), and Machine-to-Machine (M2M) communication may be implemented with beamforming, MIMO, and array antennas. In addition, the application of a cloud radio access network (RAN) as the aforementioned big data processing technology may be regarded as an example of convergence between 5G technology and IoT technology.

Most New Radio (NR) systems use higher frequency points than Long Term Evolution (LTE). However, due to the high deployment cost of base stations, operator systems can achieve coverage performance of an NR system equivalent to that of an LTE system, and thus can upgrade or deploy NR base station devices directly to the original LTE sites.

For Internet of Things (IOT) UEs such as Machine-Type Control (MTC) user equipment (UE) and Narrowband Internet of Things (NB-IOT), the requirements for battery life and battery cost are relatively high due to special application scenarios. high. When designing a system, this type of UE should be designed to have features such as a smaller operating bandwidth and fewer transceiver antennas than a general UE supporting a broadband service. Also, this type of UE (eg, an IOT device in the basement) may have worse coverage than a general UE supporting broadband service. In order for this type of UE to achieve basically the same coverage as a general UE supporting a broadband service, the existing uplink and downlink signals/channels must be improved.

In an NR system, one transmission (or repetition) of a transport block (TB) occupies all or part of a symbol in a slot in the time domain and occupies one or more physical resource blocks (PRB) in the frequency domain. However, since the uplink is a power-limited system, a coverage improvement effect cannot be obtained even if more PRBs are allocated thereto. Conversely, the uplink transmission time should be extended as long as possible. NR supports current repetition, but since the current unit for time domain resource scheduling in NR is at most one pertinent slot, if the number of PRBs occupied in the frequency domain is small, transmission of TBs through multiple slots cannot be supported. Compared to transmission with a low bit rate (TB over multiple slots), the current system supports the Redundancy Version (RV) rotation method to improve performance, but if the bit rate is too high, the performance is still limited.

Also, to transmit at high frequencies, eg, greater than 52.6 GHz, larger subcarrier spacings, such as hundreds of kHz, are needed. Then, the slot becomes very short. Therefore, to satisfy the uplink coverage requirement, a longer transmission time is required.

This disclosure is proposed to improve the coverage of the PDCCH by improving the Physical Downlink Control Channel (PDCCH).

According to a first aspect of the present disclosure, a method for receiving a Physical Downlink Control Channel (PDCCH) includes: receiving configuration information of the PDCCH; determining resource mapping from a control channel element (CCE) of the PDCCH to one or a plurality of search space (SS) regions based on the configuration information; and receiving the PDCCH based on the resource mapping.

In an exemplary embodiment, the method may further include: determining, based on the configuration information, at least one of the following: mapping from Resource Element Group (REG) to CCE, PDCCH candidate to SS regions. Mapping, information indicating whether precoders or beams in a plurality of SS regions are the same.

In an exemplary embodiment, a plurality of SS regions may form one SS-bundle, and a plurality of CCEs of one PDCCH may be mapped to a plurality of SS regions belonging to the same SS-bundle.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may belong to the same SS or belong to different SSs.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may belong to the same SS period, and the size of each SS-bundle may be the same or different; If the size of each SS-bundle is the same, the number of SS regions in each SS period is an integer multiple of the size of each SS-bundle.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may have a predetermined time interval between each other.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may be determined by information about a semi-statically configured time resource.

In an exemplary embodiment, PDCCH monitoring may be performed for a plurality of SS regions forming one SS-bundle; PDCCH monitoring is not performed on resources indicated by non-downlink symbols in a plurality of SS regions forming one SS-bundle; Alternatively, under the assumption that there is no PDCCH signal on a resource indicated by a non-downlink symbol in a plurality of SS regions forming one SS-bundle, PDCCH monitoring is performed for a plurality of SS regions forming one SS-bundle. do.

In an exemplary embodiment, an SS-bundle may be formed by a plurality of effective SS regions, all symbols being semi-statically configured as downlink symbols or indicated by a slot format indicator (SFI) as downlink symbols. SS regions are valid SS regions.

In an exemplary embodiment, for the first type of SS, the SS region of the SS-bundle may be determined based on the semi-statically configured SS region; For the second type of SS, the SS region of the SS-bundle may be determined based on a semi-statically configured time resource and a slot format indicator (SFI).

In an exemplary embodiment, the resource mapping determined based on the configuration information indicates that all REGs of any CCE of one PDCCH are mapped to the same SS region, and that at least two CCEs of one PDCCH have different SSs in one SS-bundle. It can be marked as mapped to a region.

In an exemplary embodiment, mapping at least two CCEs of one PDCCH to different SS regions in one SS-bundle may include transmitting CCEs, which are the same repeated samples, in different SS regions.

In an exemplary embodiment, in the resource mapping determined based on the configuration information, a plurality of REGs of one CCE of one PDCCH are mapped to a plurality of SS regions in one SS-bundle, and a plurality of CCEs of one PDCCH are mapped to a plurality of SS regions in one SS-bundle. It may indicate mapping to a plurality of SS regions in one SS-bundle.

In an exemplary embodiment, the number of OFDM symbols corresponding to a plurality of SS regions in one SS-bundle may be an integer multiple of the number of resource element groups (REGs) included in one CCE or an integer multiple of the size of the REG bundle. .

In an exemplary embodiment, the method includes determining a reference time and slot offset based on the received PDCCH; and receiving a Physical Downlink Shared Channel (PDSCH) based on a reference time and a slot offset, wherein the reference time is based on a starting point of a slot in which the last symbol of the last PDCCH repetition in the time domain is located, the maximum number of repetitions One of the start or end points of the slot in which the last symbol of the PDCCH candidate determined by

According to a second aspect of the present disclosure, a communication device may include a processor and a memory, wherein the memory stores instructions, which, when executed by the processor, cause the processor to perform the above method.

According to a third aspect of the present disclosure, a method for transmitting a Physical Downlink Control Channel (PDCCH) includes transmitting configuration information of the PDCCH, wherein the configuration information is one or more discovery from a control channel element (CCE) of the PDCCH. which may be used to determine a resource mapping to a spatial (SS) region; and transmitting the PDCCH based on the resource mapping determined from the configuration information.

In an exemplary embodiment, the configuration information may be used to determine at least one of: a mapping from a resource element group (REG) to a CCE, a mapping from a PDCCH candidate to an SS region, and precoders in a plurality of SS regions. or information indicating whether the beams are identical.

In an exemplary embodiment, a plurality of SS regions may form one SS-bundle, and a plurality of CCEs of one PDCCH may be mapped to a plurality of SS regions belonging to the same SS-bundle.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may belong to the same SS or belong to different SSs.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may belong to the same SS period, and the size of each SS-bundle may be the same or different; If the size of each SS-bundle is the same, the number of SS regions in each SS period is an integer multiple of the size of each SS-bundle.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may have a predetermined time interval between each other.

In an exemplary embodiment, a plurality of SS regions forming one SS-bundle may be determined by information about a semi-statically configured time resource.

In an exemplary embodiment, an SS-bundle may be formed by a plurality of effective SS regions, all symbols being semi-statically configured as downlink symbols or indicated by a slot format indicator (SFI) as downlink symbols. SS regions are valid SS regions.

In an exemplary embodiment, for the first type of SS, the SS region of the SS-bundle may be determined based on the semi-statically configured SS region; For the second type of SS, the SS region of the SS-bundle may be determined based on a semi-statically configured time resource and a slot format indicator (SFI).

In an exemplary embodiment, the resource mapping determined based on the configuration information indicates that all REGs of any CCE of one PDCCH are mapped to the same SS region, and that at least two CCEs of one PDCCH have different SSs in one SS-bundle. It can be marked as mapped to a region.

In an exemplary embodiment, mapping at least two CCEs of one PDCCH to different SS regions in one SS-bundle may include transmitting CCEs, which are the same repeated samples, in different SS regions.

In an exemplary embodiment, in the resource mapping determined based on the configuration information, a plurality of REGs of one CCE of one PDCCH are mapped to a plurality of SS regions in one SS-bundle, and a plurality of CCEs of one PDCCH are mapped to a plurality of SS regions in one SS-bundle. It may indicate mapping to a plurality of SS regions in one SS-bundle.

In an exemplary embodiment, the number of OFDM symbols corresponding to a plurality of SS regions in one SS-bundle may be an integer multiple of the number of resource element groups (REGs) included in one CCE or an integer multiple of the size of the REG bundle. .

In an exemplary embodiment, the method may further include transmitting a Physical Downlink Shared Channel (PDSCH) based on a reference time determined based on the PDCCH and a slot offset, wherein the reference time is the last of a last PDCCH repetition in the time domain. The starting point of the slot in which the symbol is located, the starting or ending point of the slot in which the last symbol of the PDCCH candidate determined based on the maximum number of repetitions is located, or the ending point of the last symbol of the last PDCCH repetition in the time domain, or the first of the last PDCCH repetitions in the time domain One of the endpoints of the symbol.

According to a fourth aspect of the present disclosure, a communication device may include a processor and a memory, wherein the memory stores instructions, which, when executed by the processor, cause the processor to perform the above method.

According to a fifth aspect of the present disclosure, there is provided a computer-readable storage medium, the medium storing instructions executable by a processor to implement the above method.

In a sixth aspect, the present application provides a method for determining a resource, applied to a UE, the method comprising:

receiving resource allocation information;

determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, one transmission of occupies a plurality of time units; and/or

determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, a frequency domain occupied by one transport block determining a resource location, wherein a number of subcarriers in the at least one sub-physical resource block is less than a number of subcarriers in one physical resource block.

Optionally, the resource allocation information includes information indicating the number of time units occupied by one transport block, position information of the first time unit, start position information, length information, the number of symbols in each time unit, at least one Granularity of time domain sub-blocks, number of time domain sub-blocks, time domain resource allocation TDRA table indicating resource allocation information in time domain, index in TDRA table indicating resource allocation information in time domain, sub includes at least one of carrier spacing, granularity of a frequency domain resource sub-block, information on the number of subcarriers in at least one sub-physical resource block, a size of a bandwidth portion (BWP), and a size of a bandwidth occupied by the BWP do.

Optionally, the start position information includes position information of a start symbol in a time unit; The length information includes length information of a symbol; The granularity of a sub-block includes at least one symbol or at least one time unit.

Optionally, the configuration information includes information, for indicating transmission scheduling, configured for the UE by the base station via radio resource control RRC; The transmission scheduling information includes information, for indicating transmission scheduling, transmitted by the base station to the UE via the downlink control information DCI.

Optionally the number of time units is defined or configured as one of the following:

the number of time units includes the number of start time units, the number of complete time units other than the time unit for the start position and the end position, and the number of end time units;

the number of time units includes the number of time units other than the time unit occupied by the start position and the end position;

The number of time units includes the number of complete time units.

Optionally, according to the resource allocation information, determining a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block comprises: The above includes:

Time domain resource position occupied by one transmission of one transport block according to the start symbol position of the transport block on the first time unit, the symbol length on the last time unit, and the number of time units included in the resource allocation information and/or determining a total symbol length occupied by one transmission of one transport block;

In at least one of a parameter indicating the number of time units occupied by one transport block, start position information, length information, the number of symbols in each time unit, and the number of time domain sub-blocks, included in the resource allocation information Accordingly, determining the total symbol length, wherein the start position information and the length information are displayed individually or together;

According to the start position information, length information and the number of time domain sub-blocks included in the resource allocation information, a time domain resource position occupied by one transmission of one transport block and one transmission of one transport block occupied Determining a total symbol length in which the starting position information and the length information indicate a position and a symbol length of a start symbol in a time unit occupied by a first time domain sub-block;

Determining the total symbol length according to at least one of parameters indicating the number of time domain sub-blocks occupied by one transport block included in the resource allocation information and the number of symbols in each time domain sub-block ;

determining, according to the resource allocation information, the granularity of the at least one time domain sub-block, and according to the number of start position information and the at least one time domain sub-block included in the time domain resource allocation information, one determining the time domain resource location occupied by the transport block of

Optionally, the method includes: other than the first time domain sub-block, according to predefined rule(s) and at least one of a position of a start symbol, a symbol length and a position of an end symbol in the first time domain sub-block determining a time domain location of a time domain sub-block of

Optionally, the predefined rules include one or more of the following:

In consecutive N time units, each time domain sub-block occupies the same symbol assignment, where N is a positive integer;

Determine, according to the start position information and the length information, the symbol allocation occupied by the first time domain sub-block, and occupy N consecutively subsequent symbols available for data transmission.

Optionally, the manner of indicating the start symbol position in the first time unit and/or the total symbol length occupied by one transmission of the transport block includes at least one of the following:

a method of constructing a TDRA table by radio resource control RRC to configure a starting symbol position and a total symbol length occupied by one transmission of a transport block;

A method of jointly encoding the starting symbol position and the total symbol length occupied by one transmission of a transport block and displaying it in the TDRA table.

Optionally, according to the resource allocation information, determining at least one time domain sub-block, wherein, according to the resource allocation information, determining the at least one time domain sub-block comprises:

determining, according to the resource allocation information, a size of a time domain sub-block as L symbols or L time units, wherein L is a positive integer; and

determining, according to the resource allocation information, a granularity of at least one time domain sub-block;

According to the time domain resource allocation information, the granularity of the first time domain sub-block for determining the starting position is Q symbols or Q time units, and the granularity of the second time domain sub-block for determining the transmission length is Q symbols or Q time units. It is determined that the granularity is M symbols or M time units, where Q and M are positive integers.

Optionally, according to the resource allocation information, determining the granularity of the at least one time domain sub-block comprises:

determine the granularity of at least one time domain sub-block according to a subcarrier interval in the resource allocation information and a corresponding relationship between the granularity of the time domain sub-block and the subcarrier interval, predefined or configured by the base station to do;

Or, according to the granularity of the frequency domain resource sub-block in the resource allocation information, and the corresponding relationship between the granularity of the frequency domain resource sub-block and the granularity of the sub-block, predefined or configured by the base station. , determining the granularity of the at least one time domain sub-block.

Optionally, according to the resource allocation information, the method of determining the number of subcarriers in the at least one sub-physical resource block includes at least one of:

a manner of determining, according to the information for indicating the number of subcarriers in the at least one sub-physical resource block in the resource allocation information, the number of subcarriers in the at least one sub-physical resource block;

a method of determining the number of subcarriers in at least one sub-physical resource block according to information indicating a size of a bandwidth part (BWP) in the resource allocation information or a size of a bandwidth occupied by the BWP;

a method of determining the number of subcarriers in the at least one sub-physical resource block according to information indicating a subcarrier interval in the resource allocation information and bandwidth information of the at least one sub-physical resource block;

Subcarriers in at least one sub-physical resource block according to information for indicating, in the resource allocation information, the number of symbols allocated in the time domain for transmission of one transport block or the number of symbols in a time domain unit How to determine the number of them.

Optionally, according to the number of subcarriers in the at least one sub-physical resource block, determining a frequency domain resource location occupied by one transport block comprises:

determining a start position of a frequency domain resource occupied by one transport block according to the number of subcarriers in a first sub-physical resource block among the number of subcarriers in the at least one sub-physical resource block;

and determining the size of a frequency domain resource occupied by one transport block according to the number of subcarriers in a second sub-physical resource block among the number of subcarriers in the at least one sub-physical resource block. do.

In a seventh aspect, the present application provides a method for determining a resource, applied to a base station, the method comprising:

transmitting resource allocation information;

determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, one transmission of occupies a plurality of time units; and/or

determining, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, the one transport block is determining an occupying frequency domain resource location, wherein the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block.

In an eighth aspect, the present application provides a UE, the UE comprising:

a first processing module configured to receive resource allocation information;

A second processing module, configured to determine, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, comprising: a second processing module, wherein one transmission of the transport block occupies a plurality of time units; and/or

Determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, the frequency occupied by the one transport block and a second processing module configured to determine a domain resource location, wherein a number of subcarriers in the at least one sub-physical resource block is less than a number of subcarriers in one physical resource block.

In a ninth aspect, the present application provides a base station, the base station comprising:

a third processing module, configured to transmit resource allocation information;

A fourth processing module, configured to determine, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, comprising: a fourth processing module, wherein one transmission of the transport block occupies a plurality of time units; and/or

Determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, the frequency occupied by the one transport block and a fourth processing module, configured to determine a domain resource location, wherein a number of subcarriers in the at least one sub-physical resource block is less than a number of subcarriers in one physical resource block.

In a tenth aspect, the present application provides a UE comprising a processor, a memory and a bus,

the bus is configured to connect the processor and the memory;

the memory is configured to store a computer program;

The processor is configured to perform the method for determining a resource in the first aspect of the present application.

In an eleventh aspect, the present application provides a base station comprising a processor, a memory and a bus,

the bus is configured to connect the processor and the memory;

the memory is configured to store a computer program;

The processor is configured to perform the method for determining a resource in the second aspect of the present application.

The technical solution provided in the present application has at least the following advantageous effects: The method includes: receiving resource allocation information; determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, one transmission of occupies a plurality of time units; and/or determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and, according to the number of subcarriers in the at least one sub-physical resource block, the one determining a frequency domain resource location occupied by a transport block, wherein the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block. The present application achieves more efficient resource allocation for transmitting transport blocks.

According to the present disclosure, a method and apparatus for improving a Physical Downlink Control Channel (PDCCH) to improve the coverage of the PDCCH are proposed.

Additional aspects and advantages of the present disclosure will be provided in the description which follows, which will be apparent from the description or will be understood through practice of the disclosure.

In order to more clearly describe the technical solutions in the embodiments of the present application, drawings used to describe the embodiments of the present application will be briefly described.
1 is a schematic diagram illustrating a wireless communication system;
2 shows an exemplary time-frequency resource mapping from the control resource set CORESET.
3 shows an example REG bundle in an example time-frequency resource mapping of CORESET.
4 shows an example REG bundle in an example time-frequency resource mapping of CORESET.
5 shows an exemplary mapping from CORESET to search space SS.
6 is a schematic flowchart illustrating a resource determination method provided in an embodiment of the present application.
7 is a schematic flowchart illustrating another resource determination method provided in an embodiment of the present application.
8 is a schematic diagram illustrating resource allocation in the time domain provided in an embodiment of the present application.
9 is a schematic diagram illustrating resource allocation in the time domain provided in an embodiment of the present application.
10 is a schematic diagram illustrating resource allocation in the time domain provided in an embodiment of the present application.
11 is a schematic diagram illustrating resource allocation in the time domain provided in an embodiment of the present application.
12 is a schematic diagram illustrating resource allocation in the time domain provided in an embodiment of the present application.
13 is a structural diagram illustrating a UE provided in an embodiment of the present application.
14 is a schematic diagram illustrating a base station provided in an embodiment of the present application.
15 is a structural diagram illustrating a UE provided in an embodiment of the present application.
16 is a schematic diagram illustrating a base station provided in an embodiment of the present application.
17 illustrates an exemplary communication method in accordance with the present disclosure.
18 shows an exemplary mapping from CCE/REG to SS region.
19 shows an exemplary mapping from CCE/REG to SS region.
20 shows an exemplary mapping from CCE/REG to SS region.
21 shows an example of an SS region forming an SS-bundle.
22 shows an exemplary schematic diagram of determining a position of a PDCCH candidate in a method of determining an SS based on a repeated PDCCH.
23 shows an exemplary schematic diagram of determining a position of a PDCCH candidate in a method of determining an SS based on a repeated PDCCH.
24 depicts a simplified block diagram of a physical device suitable for practicing the present disclosure.

Hereinafter, embodiments of the present application will be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numbers refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative, and are only for describing the present application, and cannot be construed as limiting the present application.

Those skilled in the art will understand that singular forms may include plural forms unless specifically stated otherwise. The words "comprise" and "comprise," as used in the specification of this application, refer to the described feature, integer, step, action, element, and/or the presence of an element, but include one or more other features, integers, steps, It should also be understood that this does not exclude the presence or addition of acts, elements, components, and/or combinations thereof. It should be understood that when an element is referred to as being “connected” or “connected” to another element, it may be directly connected or coupled to the other element, or an intermediate element may also be present. Also, as used herein, “connected” or “connected” may include wirelessly connected or wirelessly connected. As used herein, the term "and/or" includes all or any combination of any element and one or more of the associated listed items.

BRIEF DESCRIPTION OF THE DRAWINGS The present disclosure will be described in more detail below in conjunction with the accompanying drawings and examples. It will be understood that the specific embodiments described herein are used merely to illustrate the relevant disclosure rather than to limit the disclosure.

It should be noted that embodiments of the present disclosure and features of embodiments may be combined with each other without conflicting. Hereinafter, the present invention will be described in detail along with embodiments with reference to the accompanying drawings.

The terminology used herein is used to describe specific embodiments, and is not intended to limit the scope of other embodiments. Expressions that do not specify a quantity may generally be one or more, unless otherwise specified. All terms used herein, including technical and scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

In the following description, a base station is an access device that connects a communication device to a cellular network, which is used to allocate communication resources to the communication device. A base station may be one of an entity such as a gNB, an ng-eNB, an eNB, a radio access unit, a base station controller, a base station transceiver, or the like. A communication device may be any device intended to access a service via an access network and may be configured to communicate via an access network. For example, a communication device may include, but is not limited to, a user terminal (UE), a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system configured with communication functions. It should be noted that in the following description, the terms "communication device", "user equipment", "user terminal", "terminal" and "UE" may be used interchangeably.

It should be understood that the embodiments disclosed herein may be applied to various types of cellular networks.

In order to better understand and describe the solutions of the embodiments of the present disclosure, some techniques related to the embodiments of the present disclosure are briefly described below.

1 shows an example of a wireless communication system 100, which includes one or more fixed infrastructure units forming a network distributed over a geographic area. Infrastructure unit includes access point (AP), access UE (AT), base station (BS), Node-B (Node-B), evolved NodeB (eNB) and next-generation base station (gNB) or other terminology as used herein can do.

As shown in Fig. 1, an infrastructure unit 101, 102 provides services for several mobile stations (MS) or UEs or UE devices or users 103, 104 within a service area, and the service area is a cell or cell. within the scope of the sector. In some systems, one or more BSs are communicatively coupled to a controller forming an access network, and the controllers are communicatively coupled to one or more core networks. This example is not limited to any particular wireless communication system.

In the time domain and/or frequency domain, infrastructure units 101 and 102 transmit downlink (DL) communication signals 112 and 113 to MSs or UEs 103 and 104, respectively. MS or UEs 103 and 104 communicate with infrastructure units 101 and 102 via uplink (UL) communication signals 111 and 114, respectively.

Optionally, the mobile communication system 100 is an Orthogonal Frequency Division Multiplexing (OFDM)/Orthogonal Frequency Division Multiplexing (OFDMA) system including a plurality of base stations and a plurality of UEs, and the plurality of base stations include a base station 101, a base station 102 ), and the plurality of UEs includes UE 103 and UE 104 . The base station 101 communicates with the UE 103 via the UL communication signal 111 and the DL communication signal 112 .

When the base station has a downlink packet to be transmitted to the UE, each UE will obtain a downlink allocation (resource) such as a radio resource group in the PDSCH (Physical Downlink Shared Channel). When the UE needs to transmit a packet to the base station in the uplink, the UE obtains a grant from the base station, and the grant allocates a Physical Uplink Shared Channel (PUSCH) containing an uplink radio resource set. The UE obtains downlink or uplink scheduling information from a Physical Downlink Control Channel (PDCCH) designated for itself. Downlink or uplink scheduling information and other control information carried by the PDCCH is referred to as downlink control information (DCI).

1 also illustrates different physical channels for downlink 112 and uplink 111 examples. The downlink 112 includes a PDCCH 121 , a PDSCH 122 , a Physical Broadcast Channel (PBCH) 123 , and a Primary Synchronization Signal (PSS)/Secondary Synchronization Signal (SSS) 124 . In 5G NR, PSS, SSS, and PBCH together constitute an SS/PBCH block (SSB) 125 . The PDCCH 121 transmits a DCI 120 to the UE, that is, the DCI 120 is carried by the PDCCH 121 . The PDSCH 122 transmits downlink data information to the UE. The PBCH carries a Master Information Block (MIB) used for early discovery of the UE and full cell coverage. The uplink 111 is a Physical Uplink Control Channel (PUCCH) 131 that carries Uplink Control Information (UCI) 130, a PUSCH 132 that carries uplink data information, and a Physical Uplink (PRACH) that carries random access information. Random Access Channel) (133). The present invention can be applied to a resource allocation scheme for sidelink transmission in addition to the existing cellular networking scheme. Sidelink transmission means communication between UEs.

Optionally, the wireless communication network 100 uses OFDMA or multi-carrier architecture, including adaptive modulation and coding (AMC) on the downlink, and next-generation single-carrier FDMA architecture or multi-carrier OFDMA architecture for UL transmission. FDMA-based single-carrier architectures include Interleaved FDMA (IFDMA), Localized FDMA (LFDMA), and DFT-spread OFDM (DFT-SOFDM) of IFDMA or LFDMA. Also included are various enhanced Non-Orthogonal Multiple Access (NOMA) architectures of OFDMA systems.

OFDMA systems provide services to remote units by allocating downlink or uplink radio resources, typically comprising a set of subcarriers on one or more OFDM symbols. For example, the OFDMA protocol includes a set of standards such as LTE and 5G NR developed in the 3GPP UMTS standard and IEEE 802.16 in the IEEE standard. The architecture may also include the use of transmission techniques such as multi-carrier CDMA (MC-CDMA), multi-carrier direct sequence CDMA (MC-DS-CDMA), orthogonal frequency and code division multiplexing (OFCDM). Alternatively, the architecture may use simpler time and/or frequency division multiplexing/multiple access techniques, or a combination of these different techniques. In an alternative implementation manner, the communication system may use other cellular communication system protocols including, but not limited to, Time Division Multiple Access (TDMA) or Direct Sequence Code Division Multiple Access (Direct Sequence CDMA).

In the NR system, the smallest unit of resource allocation in the frequency domain is a PRB. In order to reduce the resource allocation overhead in the frequency domain, NR follows the concept of a resource block group (RBG) in LTE. The size of the RBG is determined according to the configuration from the base station and the bandwidth of the bandwidth portion (BWP). In the frequency domain, a transport block (TB) occupies a maximum of 14 symbols in one slot, which is indicated in TDRA (Time Domain Resource Allocation) of downlink control information DCI. Prior to RRC (Radio Resource Control) connection establishment, a TDRA table containing the following is predefined in the protocol: a parameter K0 (for PDSCH) or K2 (for PUSCH) indicating the position of the slot, Start position S and length of symbol L, data transmission mapping type (types of DMRS mapping such as Type A and Type B). For the downlink data channel PDSCH, the predefined TDRA table further includes an indication of the DMRS location. After RRC connection establishment, the base station may configure a new TDRA table for the UE by RRC to indicate time domain resource allocation information. In order to reduce signaling overhead, joint coding of a start and length indicator (SLIV) indicating a start symbol S and a length L is used to indicate a start position S and a length L of a symbol in a slot.

A Physical Uplink Shared Channel (PUSCH) will be described as an example, and the same method may be applied to a Physical Downlink Shared Channel (PDSCH).

PUSCH-TimeDomainResourceAllocation ::= SEQUENCE {

k2 INTEGER(0..32) OPTIONAL, -- Need S

mappingType ENUMERATED {typeA, typeB},

startSymbolAndLength INTEGER (0..127)

}

.The slot of the PUSCH transmitted by the UE is determined by K2 as follows.

.

및

는 각각 PUSCH 및 PDCCH의 서브캐리어 간격이다. 시작 슬롯에 대한, PUSCH에 할당된, 시작 심볼 S와 심볼 S로부터 계산된 연속 심볼의 개수 L은 다음 식 (1)과 식 (2)를 통해 그리고 인덱스의 행에 대응하는 시작과 길이의 표시 (SLIV)에 따라 결정된다:n is a slot in which DCI is scheduled, K2 is determined based on the numerology of PUSCH,

and

are subcarrier intervals of PUSCH and PDCCH, respectively. The number L of consecutive symbols calculated from the start symbol S and the symbol S, allocated to the PUSCH for the start slot, is through the following equations (1) and (2) and the indication of the start and length corresponding to the row of the index ( SLIV) according to:

then

(식 1)if

then

(Equation 1)

(식 2)else,

(Equation 2)

.here,

.

The PUSCH mapping type is set according to the mapping type corresponding to the row of the index based on the type A and type B PUSCH mapping types defined in clause 6.4.1.1.3 of protocol TS 38.211. The TDRA table for the PDSCH and the TDRA table for the PUSCH are configured in a similar manner.

In the NB-IoT system, in order to support coverage enhancement, the concept of a resource unit (RU) is defined so that one transmission of a TB can be performed over several subframes. In NB-IoT, the number of resource elements (REs) included in one RU is the same. The length of an RU is calculated by indicating the number of carriers that each RU occupies. In addition, the length of the corresponding TB (Transport Block) size is calculated by indicating the number of RUs.

For OFDM communication systems with large subcarrier spacing (e.g., subcarrier spacing of 120 kHz or 240 kHz) and/or systems requiring enhanced coverage, especially systems requiring enhanced uplink coverage, one transport block diagram It needs to be on several resource units in the time domain (eg, a slot, a subframe, one or more symbols, a time unit in the time domain, etc.). Compared to methods using multiple repetitions or multiple transmissions, it is possible to provide a lower bit rate to achieve better performance, especially when the transmission bandwidth is limited.

For the TDRA table constructed by RRC, the start symbol S and the symbol length L are calculated according to equation (1) for obtaining the SLIV values and S and L in the TDRA table; Alternatively, the value of SLIV is calculated according to S and L, and SLIV is indicated in the TDRA table, or the start symbol S and the symbol length L are indicated directly in the TDRA table.

In a communication system, a transmitting end generally controls a receiving end to receive a signal through a transmission control channel. In a cellular communication system, a base station controls signal reception and transmission of a UE by transmitting a Physical Downlink Control Channel (PDCCH). The base station transmits the PDCCH on some or all of the resources within a particular set of downlink time-frequency resources. In order for the UE to receive the PDCCH correctly, the base station needs to configure the downlink time-frequency resource set for the UE.

For example, in a 5G system, a base station controls a resource set (CORESET) for determining frequency domain resource information for a user, such as a PRB (Physical Resource Block), a time domain resource length (eg, consecutively occupy number of OFDM symbols) and mapping method. The base station also has a search space (SS) for determining time resource information for a user, for example, a period, a time offset, a symbol starting point, a search space type, a downlink control information (DCI) format, an aggregation level (AL), a blind The number of detections is configured. Each search space (SS) has a corresponding relationship with a control resource set CORESET. Based on this information, the UE may determine which PDCCH can be detected on which time-frequency resource, determine the AL of this PDCCH, and so on.

In general, one PDCCH may include L1 control channel elements (CCEs), one CCE may include L2 resource element groups (REGs), and one REG may include M PRBs. there is. According to the different L1 values, the AL of the PDCCH is different, and the AL has the same value as the L1. For example, when AL=1, a PDCCH having L1=1, ie, AL=1, includes one CCE. In the existing 5G system, one CCE includes 6 REGs. That is, L2=6. One REG includes M = 1 PRB, and the time unit of the PRB is 1 symbol. When the bit overhead of the PDCCH is constant, that is, when the size of the DCI format is constant, the larger the AL, the lower the coding rate and the better the performance.

A plurality of REGs of one CCE are generally mapped to time-frequency resources of the control resource set CORESET according to the rule of time rather than frequency. 2 shows an exemplary time-frequency resource mapping of the control resource set CORESET. 2, the time resource of CORESET is 3 OFDM symbols, the frequency domain resource is 12 PRBs, and there are a total of 36 PRBs, which correspond to 6 CCEs (CCE1 to CCE6), 36 corresponding to REGs (each CCE includes 6 REGs, for example, CCE1 includes REG1 to REG6. Then, in 6 REGs of one CCE, the first 3 REGs correspond to the same frequency domain location) However, they occupy different OFDM symbols The last 3 REGs correspond to the same frequency domain location but occupy different OFDM symbols, the first 3 REGs and the last 3 REGs occupy different frequency domain locations.

The physical resource mapping of REG and CCE in FIG. 2 are all logical examples. When the REG and the CCE are mapped to a physical resource, the physical resource to which the REG and the CCE are mapped may be different according to a mapping method.

, 여기서 L은 REG 번들의 크기이다. 하나의 CCE는 하나 이상의 REG 번들을 포함할 수 있다. 예를 들어, CCEj는 하나 또는 복수의 REG 번들

을 포함할 수 있으며, For example, CCE may be mapped to REG based on interleaving to obtain frequency diversity gain. According to this mapping method, a plurality of REGs in one CCE may be discontinuous in the frequency domain. The interval in the frequency domain of each REG may be determined by an interleaving coefficient. The minimum resource unit of interleaving is one REG bundle. REGs in one REG bundle use the same precoder. Since demodulation reference signals (DMRS) included in one REG bundle use the same precoder, a channel estimation result based on these DMRSs may be interpolated. For example, one REG bundle may include multiple REGs, for example REGi may include: REG

, where L is the size of the REG bundle. One CCE may include one or more REG bundles. For example, CCEj is bundled with one or multiple REGs.

may include,

는 아래와 같은, 인터리빙 기능이다.here,

is the following interleaving function.

하나의 CORESET에 있는 REG의 총 수이다.Here, R is an interleaving coefficient. n _shift is configured according to cell ID or higher-level signaling,

Total number of REGs in one CORESET.

=36이며, 하나의 REG 번들은 L=3개의 REG를 포함하는데, 즉 동일한 주파수 도메인 위치를 점유하는 3개의 심볼 상의 REG들이 하나의 REG 번들을 형성한다. 인터리빙 계수 R=2라고 가정하면, 각 CCE는 두 개의 REG 번들을 포함한다. 예를 들어, CCE1은 2개의 REG 번들, REG 번들 1 및 REG 번들 7을 포함하며, REG 번들 1(REG1 내지 3)의 3개의 REG가 첫 번째 주파수 도메인 리소스를 점유하고, REG 번들 7(REG19 내지 21)의 3개의 REG가 일곱 번째 주파수 도메인 리소스를 점유한다. PDCCH에서 AL>1인 경우, 예를 들어 AL=2인 경우, CCE1의 REG 번들 1의 REG1 내지 3은 첫 번째 주파수 도메인 위치(3개의 OFDM 심볼에서 첫 번째 PRB)를 점유하고, CCE1의 REG 번들 7의 REG19 내지 21은 7번째 주파수 도메인 위치(3개의 OFDM 심볼에서 7번째 PRB)를 점유하고, CCE2의 REG 번들 2의 3개 REG(REG4 내지 6)는 두 번째 주파수 도메인 위치(3개의 OFDM 심볼에서 두번째 PRB)를 점유하고, CCE2의 REG 번들 8의 3개의 REG(REG22 내지 24)는 8번째 주파수 도메인 위치(3개의 OFDM 심볼 중 8번째 PRB)를 점유한다. 참고로, 수학식 1에서 CCE/REG/REG 번들의 인덱스는 모두 0부터 카운트하지만, 설명의 편의를 위해, 본 개시에서는 모든 인덱스를 1부터 카운트하며, 이러한 2 가지 카운팅 방식은 서로 균등적이다.3 shows an example REG bundle in an example time-frequency resource mapping of CORESET. As shown in Figure 3,

=36, and one REG bundle includes L=3 REGs, that is, REGs on three symbols occupying the same frequency domain position form one REG bundle. Assuming that the interleaving coefficient R=2, each CCE includes two REG bundles. For example, CCE1 includes two REG bundles, REG bundle 1 and REG bundle 7, three REGs in REG bundle 1 (REG1 to 3) occupy the first frequency domain resource, and REG bundle 7 (REG19 to REG bundle 7) 21), three REGs occupy the seventh frequency domain resource. When AL>1 in PDCCH, for example, when AL=2, REG1 to 3 of REG bundle 1 of CCE1 occupy the first frequency domain location (the first PRB in 3 OFDM symbols), and REG bundle of CCE1 REG19 to 21 of 7 occupy the 7th frequency domain position (7th PRB in 3 OFDM symbols), and 3 REGs (REG4 to 6) of REG bundle 2 of CCE2 are 2nd frequency domain position (3 OFDM symbols) occupies the second PRB), and the three REGs (REG22 to 24) of REG bundle 8 of CCE2 occupy the 8th frequency domain position (the 8th PRB of the 3 OFDM symbols). For reference, in Equation 1, all indices of the CCE/REG/REG bundle are counted from 0, but for convenience of explanation, in the present disclosure, all indices are counted from 1, and these two counting methods are equivalent to each other.

을 포함하며, 여기서

. 하나의 CCE에 있는 REG들은 동일한 프리코더를 사용한다(즉, REG 번들의 크기 L은 하나의 CCE에 포함된 REG의 수와 같다). 하나의 CCE 내의 REG들의 DMRS들의 채널 추정 결과들이 보간될 수 있다.The mapping from CCE to REG may be continuous to obtain frequency selective gain. According to this mapping scheme, a plurality of REGs in one CCE are continuous in a time-frequency resource. For example, CCEj is bundled with one or more REGs.

includes, where

. REGs in one CCE use the same precoder (ie, the size L of a REG bundle is equal to the number of REGs included in one CCE). Channel estimation results of DMRSs of REGs in one CCE may be interpolated.

4 shows an example REG bundle in an example time-frequency resource mapping of CORESET. As shown in FIG. 4 , the first three REGs (REG1 to 3) of the CCE (CCE1) occupy the first frequency domain location, and the last three REGs (REG4 to 6) occupy the second frequency domain location. When AL>1 in PDCCH, for example, when AL=2, REG1 to 3 of CCE1 occupy the first frequency domain position, REG4 to 6 of CCE1 occupy the second frequency domain position, and REG1 of CCE2 to 3 occupy the third frequency domain position and REG4 to 6 of CCE2 occupy the fourth frequency domain position.

In the above diagram, the frequency domain resources of CORESET are contiguous, that is, a total of 12 PRBs of CCE1 and CCE2 are contiguous. In actual use, the frequency domain resources of CORESET use N PRB groups as the minimum contiguous resource granularity, and groups of N PRBs may be discontinuous, which does not affect the mapping scheme described above. For example, the first 6 PRBs out of 12 PRBs are continuous, occupying the 11th to 16th PRBs of the system bandwidth, and the last 6 PRBs out of the 12 PRBs also consecutively occupy the 30th to 36th PRBs of the system bandwidth occupy REG/CCE may still be mapped to these 12 PRBs according to the rules described above.

It should be understood that, in order to improve the accuracy of channel estimation, the base station may configure the same precoder in one REG bundle, and may configure the same precoder on consecutive frequency domain resources in CORESET. For example, CORESET contains 48 PRBs, of which the first 24 PRBs are continuous and the last 24 PRBs are continuous. Then, the precoders of each group of consecutive 24 PRBs are the same. Even if the UE detects only one PDCCH with AL=1 on 6 PRBs, the UE may assume that all DMRS on these 24 PRBs can be used for channel estimation and interpolation.

As mentioned above, each search space has a corresponding relationship with CORESET. For example, when configuring this search space, CORESET corresponding to this search space may be configured. Formation and mapping of REG/CCE is performed in each CORESET. The formation and mapping of REG/CCE in the search space corresponding to the same CORESET are the same.

5 shows an exemplary mapping of CORESET and search space SS. 5, the base station configures three search spaces (SS1, SS2, SS3) corresponding to CORESET1, CORESET1, and CORESET2, respectively, for the UE. The length of CORESET1 is 2 symbols, and the time domain resources of SS1 and SS3 consist of a period of 40 slots and an offset of 0. The duration of SS1 and SS3 is 4 slots, and the 1st to 2nd symbols and 8th to 9th symbols of each slot include CORESET1, respectively. The time domain resource of SS2 consists of a period of 80 slots and an offset of 10, and the duration is 1 slot. A group of SS symbols corresponding to a complete CORESET resource is recorded as an SS region or PDCCH monitoring occurrence (MO). In the following description, this is referred to as an SS region. Then, in the case of SS1 and SS3, the 1st and 2nd symbols in slot 1 are SS area 1, the 8th to 9th symbols in slot 1 are SS area 2, and the 1st and 2nd symbols in slot 2 are SS area 3, 8th to 9th symbols in slot 2 are SS region 4, 1st and 2nd symbols in slot 3 are SS region 5, 8th to 9th symbols in slot 3 are SS region 6, 1st to 2nd symbols in slot 4 is SS region 7, the 8th to 9th symbols in slot 4 are SS region 8, 1st to 2nd symbols in slot 41 are SS region 9, 8th to 9th symbols in slot 41 are SS region 10, and the rest in this way For SS2, the 5th to 6th symbols in slot 10 are SS region 1, the 5th to 6th symbols in slot 90 are SS region 2, and so on. The CCE of one PDCCH of SS1 or SS3 is mapped only to the 1st to 2nd symbols or 7th to 8th symbols in one of slots 1 to 4, slots 41 to 44..., that is, the SS regions cannot intersect. . For example, CCEs of one PDCCH of SS1 cannot be distributed in the first SS region and the second SS region.

In order to make the objectives, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in more detail with reference to the accompanying drawings.

Example 1

An embodiment of the present application provides a resource determination method applied to the UE. A schematic flowchart of the method is shown in FIG. 6 , the method comprising the following steps.

Step S601: Receiving resource allocation information.

Step S602: determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, wherein one one transmission of a transport block of occupies a plurality of time units; and/or

determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, a frequency domain occupied by one transport block determining a resource location, wherein a number of subcarriers in the at least one sub-physical resource block is less than a number of subcarriers in one physical resource block.

In an embodiment of the present application, the method comprising: receiving resource allocation information; determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, one transmission of occupies a plurality of time units; and/or determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, one transport block occupies Determining a frequency domain resource location where the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block. The present application achieves more efficient resource allocation for transmission of transport blocks.

Optionally, the resource allocation information includes information indicating the number of time units occupied by one transport block, position information of the first time unit, start position information, length information, the number of symbols in each time unit, at least one Granularity of time domain sub-blocks, number of time domain sub-blocks, time domain resource allocation TDRA table indicating resource allocation information in time domain, index in TDRA table indicating resource allocation information in time domain, sub includes at least one of carrier spacing, granularity of a frequency domain resource sub-block, information on the number of subcarriers in at least one sub-physical resource block, a size of a bandwidth portion (BWP), and a size of a bandwidth occupied by the BWP do.

Optionally, the start position information includes position information of a start symbol of a time unit; The length information includes length information of a symbol; the granularity of the sub-block includes at least one symbol or at least one time unit;

Optionally, the configuration information includes information, for indicating transmission scheduling, configured for the UE by the base station via radio resource control RRC; The transmission scheduling information includes information, for indicating transmission scheduling, transmitted by the base station to the UE via the downlink control information DCI.

Optionally, the number of time units is defined or configured as one of:

the number of time units includes the number of start time units, the number of complete time units other than the time unit for the start position and the end position, and the number of end time units;

the number of time units includes the number of time units other than the time unit occupied by the start position and the end position;

The number of time units includes the number of complete time units.

Optionally, according to the resource allocation information, determining a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block comprises: The above includes:

Time domain resource position occupied by one transmission of one transport block according to the start symbol position of the transport block on the first time unit, the symbol length on the last time unit, and the number of time units included in the resource allocation information and/or determining a total symbol length occupied by one transmission of one transport block;

In at least one of a parameter indicating the number of time units occupied by one transport block, start position information, length information, the number of symbols in each time unit, and the number of time domain sub-blocks, included in the resource allocation information Accordingly, determining the total symbol length, wherein the start position information and the length information are displayed individually or together;

According to the start position information, length information and the number of time domain sub-blocks included in the resource allocation information, a time domain resource position occupied by one transmission of one transport block and one transmission of one transport block occupied Determining a total symbol length in which the starting position information and the length information indicate a position and a symbol length of a start symbol in a time unit occupied by a first time domain sub-block;

Determining the total symbol length according to at least one of parameters indicating the number of time domain sub-blocks occupied by one transport block included in the resource allocation information and the number of symbols in each time domain sub-block ;

determining, according to the resource allocation information, the granularity of the at least one time domain sub-block, and according to the number of start position information and the at least one time domain sub-block included in the time domain resource allocation information, one determining the time domain resource location occupied by the transport block of

Optionally, the method includes: other than the first time domain sub-block, according to predefined rule(s) and at least one of a position of a start symbol, a symbol length and a position of an end symbol in the first time domain sub-block determining a time domain location of a time domain sub-block of

Optionally, the predefined rules include one or more of the following:

In consecutive N time units, each time domain sub-block occupies the same symbol assignment, where N is a positive integer;

Determine, according to the start position information and the length information, the symbol allocation occupied by the first time domain sub-block, and occupy N consecutively subsequent symbols available for data transmission.

Here, each sub-block occupies the same symbol allocation, and the symbol allocation includes the same starting position and symbol length.

Here, the symbols usable for data transmission include any one of symbols usable for uplink data transmission, symbols usable for downlink data transmission, and symbols usable for sidelink data transmission.

Optionally, the manner of indicating the start symbol position in the first time unit and/or the total symbol length occupied by one transmission of the transport block includes at least one of the following:

a method of constructing a TDRA table by radio resource control RRC to configure a starting symbol position and a total symbol length occupied by one transmission of a transport block;

A method of jointly encoding the starting symbol position and the total symbol length occupied by one transmission of a transport block and displaying it in the TDRA table.

Optionally, according to the resource allocation information, determining at least one time domain sub-block, wherein, according to the resource allocation information, determining the at least one time domain sub-block comprises:

determining, according to the resource allocation information, a size of a time domain sub-block as L symbols or L time units, wherein L is a positive integer; and

determining, according to the resource allocation information, a granularity of at least one time domain sub-block;

According to the time domain resource allocation information, the granularity of the first time domain sub-block for determining the starting position is Q symbols or Q time units, and the granularity of the second time domain sub-block for determining the transmission length is Q symbols or Q time units. The granularity is determined to be M symbols or M time units, where Q and M are positive integers.

Optionally, according to the resource allocation information, determining the granularity of the at least one time domain sub-block comprises:

determine the granularity of at least one time domain sub-block according to a subcarrier interval in the resource allocation information and a corresponding relationship between the granularity of the time domain sub-block and the subcarrier interval, predefined or configured by the base station to do;

Or, according to the granularity of the frequency domain resource sub-block in the resource allocation information, and the corresponding relationship between the granularity of the frequency domain resource sub-block and the granularity of the sub-block, predefined or configured by the base station. , determining the granularity of the at least one time domain sub-block.

Optionally, according to the resource allocation information, the method of determining the number of subcarriers in the at least one sub-physical resource block includes at least one of:

a manner of determining, according to the information for indicating the number of subcarriers in the at least one sub-physical resource block in the resource allocation information, the number of subcarriers in the at least one sub-physical resource block;

a method of determining the number of subcarriers in at least one sub-physical resource block according to information indicating a size of a bandwidth part (BWP) in the resource allocation information or a size of a bandwidth occupied by the BWP;

a method of determining the number of subcarriers in the at least one sub-physical resource block according to information indicating a subcarrier interval in the resource allocation information and bandwidth information of the at least one sub-physical resource block;

Subcarriers in at least one sub-physical resource block according to information for indicating, in the resource allocation information, the number of symbols allocated in the time domain for transmission of one transport block or the number of symbols in a time domain unit How to determine the number of them.

Optionally, according to the number of subcarriers in the at least one sub-physical resource block, determining a frequency domain resource location occupied by one transport block comprises:

determining a start position of a frequency domain resource occupied by one transport block according to the number of subcarriers in a first sub-physical resource block among the number of subcarriers in the at least one sub-physical resource block;

and determining the size of a frequency domain resource occupied by one transport block according to the number of subcarriers in a second sub-physical resource block among the number of subcarriers in the at least one sub-physical resource block. do.

An embodiment of the present application provides another resource allocation method applied to a base station. A schematic flowchart of this method is shown in FIG. 7 , which includes:

Step S701: transmitting resource allocation information;

Step S702: determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, wherein one one transmission of a transport block of occupies a plurality of time units; and/or

determining, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, the one transport block is determining an occupying frequency domain resource location, wherein a number of subcarriers in the at least one sub-physical resource block is less than a number of subcarriers in one physical resource block.

In an embodiment of the present application, more efficient resource allocation for transmission of a transport block is achieved.

The above-mentioned embodiments of the present application are introduced completely and thoroughly through the following examples:

The method of the present application is applicable to a downlink channel, an uplink channel, or a sidelink channel.

In the first aspect, in order to support transmission of one TB by multiple time units, various methods of supporting time domain resource allocation will be described as follows.

Method 1: The TDRA table indicates the start symbol position S in the first time unit, the symbol length in the last time unit and the number n of time units.

Optionally, a time domain resource location is determined according to the TDRA table and a new parameter n added to each row, where n is used to indicate the number of time units occupied by one TB. In another example, the new parameter n may be indicated by additional signaling, in which case the additional signaling includes one or more joint indications such as RRC, MAC, and DCI. Comparing the two methods, the former can reduce the DCI overhead for indicating the TDRA, and the latter can reduce the configuration overhead of the TDRA table RRC. The UE determines, in the TDRA table, according to the parameter K0 or K2 for indicating the slot position, the start slot position, and in the TDRA table, determines the start symbol position according to the symbol start position S in the slot. The UE determines, according to the number n of time units occupied in the TDRA table, the number of slots occupied by the TB, and according to the symbol length L in the TDRA table, the number L of symbols occupying the last slot, , the number n of time units may be defined or configured as one of the following.

- (A) the number n of time units includes the total number of the start time unit, the number of complete time units other than the time unit for the start position and the end position, and the number of end time units;

- (B) the number of time units n includes only the number of time units other than the time unit for the start position and the end position.

- (C) the number of time units n includes the number of complete time units.

Specifically, if S=0 or L is the number of symbols in the time unit, the time unit is included, otherwise the time unit is not included.

Optionally, the time unit may be predefined as several symbols, such as 14 symbols. In this case, the time unit is a slot in the NR system. However, one transmission of one TB may actually occupy some symbols in one slot.

Optionally, the UE calculates a total symbol length L_all occupied by one transmission of the TB according to at least one of the following: a parameter n indicating the number of time units occupied by the TB, a start symbol S, a symbol length L , the number of symbols in each time unit l_unit. The UE calculates the transport block size (TBS) according to L_all. Specifically, in the method (A), L_all=l_unitXn-(l_unit-L)-S.

Optionally, Table 1 is an example of a PUSCH resource allocation table. For the RRC-configured TDRA table, the starting symbol S and the symbol length L are obtained by indicating the SLIV and calculated according to equation (1). The UE obtains a TDRA index number used to indicate time domain resource allocation according to DCI or RRC (eg, in case of configured grant type 1) indicated by index 1 in Table 1 . Then, as shown in FIG. 8 , the UE acquires the time domain resource configuration as follows: After receiving the slot of the PDCCH, the third symbol (symbol 2) of the j-th slot to the 8th symbol of the j+3 slot (symbol 7) Start sending to the location. Here, the subcarrier interval of PUSCH is 15 kHz, and according to a predefined rule, j=1.

At this time, l_unit=14, and the total number of symbols occupied by transmission is L_all=14×4-(14-8)-2=48. Table 1 describes an example of TDRA.

index Mapping type Time unit position K2 start symbol S symbol length L n number of repetitions k 0 type B j 0 14 One 2 One type B j 2 8 4 2 2 type B j 2 28 - 2 ...

Method 2: According to the start position of the sub-block indicated by the SLIV (or the start symbol S and the symbol length L indicated in the TDRA table) and the number n of the sub-blocks, the position of time domain resource allocation is determined. Here, the number n of sub-blocks may be added to the TDRA table with a new column (a new parameter is added to each index), or may be indicated by additional signaling. The additional signaling includes one or more joint indications such as RRC, MAC and DCI.

Optionally, one sub-block is defined as L symbols. The number of symbols in a sub-block may be less than or equal to the number of symbols in a time unit.

SLIV indicates the start position and symbol length of the time unit occupied by the first sub-block. The start position and symbol length of the time unit occupied by the first sub-block may be determined according to SLIV. Also, the end position may be determined according to the start position and the symbol length in the time unit occupied by the first sub-block. The end position may be in the first time unit or may span other time units, ie several time units. In addition, according to a predefined rule, it is possible to infer the time domain positions of other sub-blocks. This can be accomplished by one of the following methods.

Method A: In n consecutive time units, each sub-block occupies the same symbol allocation.

Optionally, taking index 1 of Table 1 as an example, S=2, L=8, n=4. As shown in FIG. 9, TB transmission starts at the third symbol (symbol 2) of slot j for 8 consecutive symbols, and in slot j+1, slot j+2 and slot j+3, each of 8 consecutive symbols It starts at the third symbol (Symbol 2) for the second symbol.

Method B: The symbol allocation occupied by the first sub-block may be determined according to the SLIV (or the start symbol S and the symbol length L indicated in the TDRA table), and the symbols available for uplink or downlink data transmission are n consecutively times can be occupied, that is, n symbols of length L can be occupied sequentially.

Optionally, taking index 1 of Table 1 as an example, S=2, L=8, n=4. As shown in FIG. 10 , TB transmission starts at the third symbol (symbol 2) of slot j, for 8 consecutive symbols and on subsequent n−1 sub-blocks, for each sub-block - A block contains 8 symbols. 10, the second sub-block occupies symbols 10 to 13 of slot j, symbols 0 to 3 of slot j+1, and the third sub-block occupies symbols 4 to 11 of slot j+1 , and the fourth sub-block occupies symbols 12 to 13 of slot j+1 and symbols 0 to 5 of slot j+2.

Optionally, the UE calculates a total symbol length L_all occupied by one transmission of a TB according to at least one of the following: a parameter n indicating the number of sub-blocks occupied by one TB, each sub-block The number of symbols L in , and the total number of total symbols used to transmit TB, where the total number of symbols used to transmit B, may be determined as L_all = L×n. The UE calculates the transport block size (TBS) according to L_all.

For index 1 of Table 1 above, L_all=L×n=8×4=32 can be calculated.

Method 3: Time unit position K, start symbol position S in start time unit, total symbol length L_all are indicated in the TDRA table, where L_all is greater than the number of symbols in a time unit (eg, slot or subframe, etc.) can be large In this method, the time unit may be a slot.

There are two specific ways to represent S and L_all.

Method X: A TDRA table in which the start symbol position and the total symbol length L_all are each configured as RRC.

Optionally, it is simpler and more direct to configure S and the total symbol length L_all separately. There is no need to introduce an additional SLIV calculation to support L_all as an approximate number of symbols in a time unit. For example, in Table 1, the position of the start symbol S corresponding to index 3 is 2, and the total symbol length L_all=28. And, the slot time unit is 14 symbols, and the total symbol length is approximately the number of symbols in the time unit.

Method Y: The start symbol position S and the total symbol length L_all are jointly encoded and indicated in the TDRA table.

Optionally, when the indication of the start symbol position S is within a time unit (eg, a slot or a subframe). At this time, the position of the first time unit occupied by the TB transmission may be additionally indicated in the TDRA table. For example, in the case of PDSCH, K0 indicates a slot in which transmission starts, and in the case of PUSCH, K2 is transmission. This marks the starting slot. In one example, when the number of symbols in a slot is 14 and 0≤S<14, SLIV may be calculated according to the following method.

if L_all ≤ 14,

if L_all+S ≤ 14,

if (L_all-1) ≤ 7

SLIV=14×(L_all-1)+S,

else

SLIV=14×(7-L_all+1)+(7-1-S)

if L_all+S > 14,

if (L_all-1)≤ 7

SLIV=14×(14-L_all+1)+(14-1-S)

else

SLIV=14×(L_all-1)+S

if L_all>14,

SLIV = 14×(L_all-1)+S

In method 3, the total number of symbols occupied by one transmission is L_all, which is directly determined according to TDRA or calculated according to SLIV in TDRA.

Optionally, in the above three methods, the time unit may be a slot, and the number of symbols in the sub-block is generally less than or equal to the number of symbols in the time unit. To reduce overhead, the number of symbols in a sub-block may be greater than the number of symbols in a time unit (such as a slot). In method 4 described below, the base station may configure several symbols and/or several slots into a new sub-block, and then use the sub-block to replace the symbol as the smallest time-domain scheduling resource particle.

Method 4: the UE obtains the granularity of at least one sub-block according to the configuration of the base station; The time domain resource location of one TB is determined according to the starting resource location S and the number n of sub-block(s) in the time domain resource indication domain indicated by the base station. There are several implementation methods.

Method 1): The granularity of a sub-block obtained by the UE according to the configuration of the base station is L1 symbols or L1 time units (eg, slots, etc.). The starting resource location S indicates the sub-block from which transmission begins.

Optionally, the base station configures the granularity L1 of the sub-block with 2 symbols, as shown in FIG. 11 , then S=2 and n=8 means that one TB transmission starts in the third sub-block and 8 occupies sub-blocks. That is, symbols 4 to 13 of slot j and symbols 0 to 5 of slot j+1 are occupied.

The calculation of the total symbol length occupied by one transmission of the TB is then determined according to the number of symbol(s) in the sub-block and the number of sub-block(s). When L1 is the number of symbol(s), the total number of symbol(s) is L_all=L1*n. When L1 is the number of slot(s), assuming that there are 14 symbols in one slot, the number of symbols is L_all=14*L1*n.

Method 2): According to the configuration of the base station, the UE determines the size of sub-block 1 to be L1 symbols or L1 time units (slots, etc.) and L2 symbols or L1 time units (slots, etc.) ) to obtain the size of sub=block 2 to determine to be the transmission length. The starting resource location S indicates that transmission starts in sub-block 1. The actual number of symbols transmitted depends on the size L2 of sub-block 2 .

Optionally, as shown in FIG. 12 , the base station configures the size L1 of sub-block 1 indicating the start position as 2 symbols, and the base station configures the size L2 of sub-block 2 indicating the symbol length by 8 symbol, then S=2 and n=4 indicate that one transmission of TB starts at the third sub-block, which is 2 symbols in length, and occupies 4 sub-blocks, which are 8 symbols in length. do. That is, symbols 4 to 13 of slot j, all symbols of slot j+1, and symbols 0 through symbol 7 of slot j+2.

Then, according to the number of symbols L2 in the sub-block and the number n of sub-blocks, the calculation of the total symbol length occupied by one transmission of the TB is determined. When L2 is the number of symbols, the total number of symbols is L_all=L2*n. When L2 is the number of slots, assuming that there are 14 symbols in one slot, the number of symbols is L_all=14*L2*n.

Compared with method 1), method 2) can indicate a more flexible starting position.

Optionally, for method 1) and method 2) above, slot j may be determined according to the method of determining the slot position (eg, according to K0 or K2 in the TDRA table) as in the previous method. Alternatively, the slot j may be directly predefined as a position corresponding to the PDCCH transmission occupied slot or the position of the x-th slot after the corresponding PDCCH transmission occupied slot. Preferably, slot j is an indication that the corresponding PDCCH transmission occupied slot is more suitable for the PDSCH, and the position of the xth slot after the corresponding PDCCH transmission occupied slot is more suitable for the PUSCH. Here, x may be determined according to the processing capability and/or subcarrier spacing of the UE.

Optionally, for method 1) and method 2) above, S and n may also be encoded jointly. In this way, a time window must be defined or configured to calculate the SLIV.

개의 서브-블록인 경우, SLIV 계산을 위해, 식 (1)의 L을 n으로 대체할 수 있다. 즉,Alternatively, in the case of method 1), the length of the window is

In the case of sub-blocks, for SLIV calculation, L in Equation (1) may be substituted for n. in other words,

,if n+S≤

,

/2if (n-1)≤

/2

×(n-1)+S,SLIV =

×(n-1)+S,

else

×(

/2 -n+1) + (

/2-1-S)SLIV =

×(

/2 -n+1) + (

/2-1-S)

-S, and 0≤S<

.where 0 < n≤

-S, and 0≤S<

.

At this time, one transmission of one TB is limited not to span this window. When L1 = 2 and the window length is 14, the transmission does not span more than 28 symbols.

×(n-1)+S를 계산하는 것이 더 간단한다.If the transmission is to span a window, then SLIV=

It is simpler to compute ×(n-1)+S.

The above calculation method is also applied to method 2).

Optionally, the sub-blocks above may be one or more slots. When the subcarrier interval is large and the symbol length is small, in order to obtain a constant coverage, the uplink transmission must be continued for a constant time. In this case, the UE may configure one sub-block with one or more slots. Since the time of one slot is already short, the number of occupied sub-blocks can be expressed more simply. The starting position may also be indicated as a sub-block or a slot. To achieve greater flexibility, the number of transmission sub-blocks and the starting position may be indicated in DCI or RRC using different fields or parameters, respectively.

Method 3): Determine the granularity of the sub-block according to the subcarrier spacing.

Since the subcarrier interval determines the length of a symbol and a slot, in the above method, a sub-block size may be predefined for each subcarrier interval. As shown in Table 2, the corresponding relationship between subcarrier spacing and sub-block size may be predefined in the protocol or configured through signaling. Multiple subcarrier spacings may correspond to the same or different sub-block sizes. For example, 15 kHz to 120 kHz all correspond to symbols and 240 kHz, 480 kHz and 960 kHz correspond to 28, 56, and 112 symbol sizes, respectively. The size of a sub-block may be expressed as time units such as the number of symbols or the number of slots. Table 2 shows the correspondence between subcarrier spacing and sub-block size.

subcarrier spacing Number of symbols in a sub-block (or number of slots in a sub-block) 15kHz to 120kHz 14(1) 240 kHz 28(2) 480kHz 56(4) 960kHz 112(8)

Optionally, the sub-block size is determined according to the configured parameter n and the subcarrier spacing. For example, if the subcarrier spacing is A kHz (eg, A=120), then the sub-block size is n symbols (eg, n=1), and the subcarrier spacing is m×A kHz ( For example, m=2, A=120, ie, 240 kHz), and the sub-block size is n×m symbols (ie, n×m=2 symbols). Optionally, in the protocol, the subcarrier spacing may be expressed as another corresponding parameter, or another parameter used to calculate the subcarrier spacing.

Optionally, this is because if the subcarrier spacing is large, the PRB in the frequency domain may occupy a large bandwidth. Then, the base station may configure the sizes of the frequency domain resource sub-blocks differently, or the sizes of the frequency domain resource sub-blocks may be predefined according to the subcarrier spacing. In this case, the number of symbols in the sub-block in the time domain sub-block may be determined by the number of frequency domain sub-blocks according to a predefined relationship. For example, when a frequency domain sub-block has 1 subcarrier, the size of the time domain sub-block is 14 symbols; When a frequency domain sub-block has 2 sub-carriers, the size of the time domain sub-block is 7 symbols, and so on. And, when the base station informs the UE of the size of the frequency domain sub-block, the size of the time domain sub-block can be inferred correspondingly. Alternatively, when the base station indicates the size of the time domain sub-block to the UE, the size of the frequency domain sub-block may be inferred correspondingly.

Optionally, the granularity of the sub-blocks may be configured for uplink or downlink or sidelink data transmission and/or control channel transmission respectively. That is, the same or different sub-block granularities may be configured.

Optionally, in the above method, the UE may determine the data transmission mapping type (type A and type B) according to the indication in the TDRA table. In particular, in the case of this new resource allocation scheme, only one of a plurality of transmission types can be predefined or configured (additional configuration).

Optionally, although the transmission of one transport block spans multiple time units, more repetition may be introduced to achieve better coverage or higher reliability. The number of repetitions may be configured separately, or as shown in Table 1, an item of the number of repetitions k may be added to the TDRA table and displayed together with other time domain resource allocation information.

Second Aspect: Frequency Domain Resource Allocation

In NR, there are two methods for frequency domain resource allocation.

Type 0 resource allocation method: according to a predefined criterion and/or configuration of a base station, after dividing a frequency domain resource having a given bandwidth into several Resource Block Groups (RBGs), one or several resource block groups occupied by TB transmission are It is displayed in a bitmap format. Each resource block group contains one or more physical resource blocks (PRBs) or virtual resource blocks (VRBs). The number of physical resource blocks included in each resource block group is defined or configured according to the size of a given bandwidth. Optionally, Table 3 shows RBG values corresponding to different BWP bandwidths. The base station configures one of two configurations by RRC. Table 3 indicates the number of subcarriers in an RGB value or sub-block corresponding to different BWP bandwidths.

BWP size configuration 1 configuration 2 1 to 36 2 4 37 to 72 4 8 73 to 144 8 16 145 to 275 16 16

Type 1 resource allocation method: In VRB or PRB units, and by using a resource indication value (RIV) to indicate the starting position RB_start of the resource and the length L_R of the contiguous resource block. The resource indication value RIV is calculated using equations (1) and (2). In the case of a large subcarrier spacing, since the bandwidth occupied by one subcarrier can be hundreds of kHz (kHz) or hundreds of MHz (MHz), especially in the case of uplink transmission with limited power than the method of distributing power in a large bandwidth, It may be more desirable to focus on a small bandwidth for power spectral density (PSD) boosting. PSD boosting can achieve the same or better coverage while saving spectral resources. It can support more users.

Optionally, a smaller frequency domain resource block may be defined, such as a partial resource block (sub-PRB, sub-physical resource block) method for frequency domain resource allocation. A sub-PRB may have one or more subcarriers. The base station may configure the UE the number of subcarriers in the sub-PRB. Alternatively, the UE may derive it according to different subcarrier spacings based on the protocol. Specifically, there is the following method.

Method 1: The base station configures the number of subcarriers of the sub-PRB directly to the UE through signaling (RRC, MAC, DCI, etc.). For example, the number of subcarriers of a sub-PRB is configured directly to the UE.

Method 2: According to the size of the BWP (the number of frequency domain resource blocks occupied by the BWP) or the size (Hz) of the bandwidth occupied by the BWP, the number of subcarriers of the sub-PRB is determined. Optionally, the number of subcarriers in the one or more corresponding sub-PRB groups may be defined or configured with respect to the number of frequency domain resource blocks occupied by the at least two BWPs or the bandwidth occupied by the at least two BWPs. When defining or configuring multiple groups of numbers of subcarriers, the base station may indicate to the UE one of the multiple groups of numbers of subcarriers via signaling (eg, one of DCI, MAC, RRC). there is.

Optionally, as shown in Table 3, when the BWP occupies 50 PRBs, the number of subcarriers in one sub-PRB has two groups, where the first group has four subcarriers and two The second group has 8 subcarriers. The base station may further indicate to the UE that the first configuration (ie, the first group) has 4 subcarriers.

Method 3: The bandwidth (eg, in Hz) of the sub-PRB is predefined or configured for the UE by the base station, and the number of subcarriers in the sub-PRB is determined according to the subcarrier interval and the bandwidth of the sub-PRB .

Optionally, the bandwidth of the sub-PRB is configured to be 1.44 MHz, and for a subcarrier spacing of 120 kHz, the sub-PRB may have 1.44 MHz/120 kHz = 12 subcarriers. For a subcarrier spacing of 240 kHz, a sub-PRB may have 1.44 MHz/240 kHz = 6 subcarriers; For a subcarrier spacing of 480 kHz, one sub-PRB may have 1.44 MHz/480 kHz = 3 subcarriers; For a subcarrier spacing of 1.44 Hz, one sub-PRB may have one subcarrier of 1.44 MHz, and so on.

Method 4: Calculate the number of subcarriers of the sub-PRB according to the number of symbols in the time domain unit or the number of symbols allocated in the time domain resource for transmitting the TB.

Optionally, the total number of REs (eg, 144 REs) in the scheduling resource is predefined or configured, the number of subcarriers in the sub-PRB and the number of symbols in the time domain unit (or the number of symbols the TB transmits The total number of REs of the scheduling resource is obtained by multiplying the number of symbols allocated to the time domain resource). For example, if the total number of REs in the scheduling resource is 168 REs and the number of symbols in the time domain unit is 28, then the number of subcarriers in the sub-PRB is 168/28=6.

Optionally, in the above methods 1 to 4, a larger bandwidth can be allocated at a time by replacing the number of subcarriers in the sub-PRB with the number of RBs or the number of RBGs, so that time domain resource allocation requires Bit overhead is reduced. In this case, the characteristic may be referred to as a super resource block group (super RBG). In method 4 above, a symbol in the time domain may be replaced with time units in another time domain, such as a set of symbols, a slot, a subframe, and the like.

For frequency domain resource allocation, one of two methods (Type 0 or Type 1) in NR resource allocation may be applied. The same can be applied to other resource allocation methods. Here, one frequency domain resource scheduling unit is one or more sub-PRBs (or one or more super RBGs).

Optionally, in the type 2 frequency domain resource allocation method, it is necessary to indicate the starting frequency domain resource location and the occupied resource size. In this case, different granularities can be used for the indication. For example, one of Methods 1 to 4 above may be performed in a first frequency domain (eg, sub-PRB or PRB or super RBG) to indicate a starting position of a frequency domain resource occupied by one transmission. Used to determine granularity. Any one of methods 1-4 above determines the granularity of the second frequency domain (eg, sub-PRB or PRB or super RBG) to indicate the size of the frequency domain resource occupied by one transmission. used to do

The technical solutions provided in the embodiments of the present application have at least the following beneficial effects:

A more efficient resource allocation for transmission of transport blocks is achieved.

Based on the same inventive concept of Embodiment 1, the embodiment of the present application further provides a UE. A schematic structural diagram of the UE is shown in FIG. 13 . The UE 1300 includes a first processing module 1301 and a second processing module 1302 .

the first processing module 1301 is configured to receive resource allocation information;

The second processing module 1302 determines, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block. and one transmission of one transport block occupies a plurality of time units; and/or

The second processing module 1302 determines, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, and determine a frequency domain resource location occupied by the one transport block, wherein the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block.

Optionally, the resource allocation information includes information indicating the number of time units occupied by one transport block, position information of the first time unit, start position information, length information, the number of symbols in each time unit, at least one time Granularity of domain sub-blocks, number of time domain sub-blocks, time domain resource allocation TDRA table indicating resource allocation information in time domain, index in TDRA table indicating resource allocation information in time domain, subcarrier and at least one of an interval, a granularity of a frequency domain resource sub-block, information on the number of subcarriers in at least one sub-physical resource block, a size of a bandwidth portion (BWP), and a size of a bandwidth occupied by the BWP.

Optionally, the start position information includes position information of a start symbol in a time unit; The length information includes length information of a symbol; The granularity of a sub-block includes at least one symbol or at least one time unit.

Optionally, the configuration information includes information, for indicating transmission scheduling, configured for the UE by the base station via radio resource control RRC; The transmission scheduling information includes information, for indicating transmission scheduling, transmitted by the base station to the UE via the downlink control information DCI.

Optionally the number of time units is defined or configured as one of the following:

the number of time units includes the number of start time units, the number of complete time units other than the time unit for the start position and the end position, and the number of end time units;

the number of time units includes the number of time units other than the time unit occupied by the start position and the end position;

The number of time units includes the number of complete time units.

Optionally, according to the resource allocation information, determining a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block comprises: The above includes:

Time domain resource position occupied by one transmission of one transport block according to the start symbol position of the transport block on the first time unit, the symbol length on the last time unit, and the number of time units included in the resource allocation information and/or determining a total symbol length occupied by one transmission of one transport block;

At least one of the following included in the resource allocation information: a parameter indicating the number of time units occupied by one transport block, start position information, length information, the number of symbols in each time unit, and the number of time domain sub-blocks determining a total symbol length according to , wherein the start position information and the length information are displayed individually or together;

According to the start position information, length information and the number of time domain sub-blocks included in the resource allocation information, a time domain resource position occupied by one transmission of one transport block and one transmission of one transport block occupied Determining a total symbol length in which the starting position information and the length information indicate a position and a symbol length of a start symbol in a time unit occupied by a first time domain sub-block;

Determining the total symbol length according to at least one of parameters indicating the number of time domain sub-blocks occupied by one transport block and the number of symbols in each time domain sub-block included in the resource allocation information step;

determining, according to the resource allocation information, the granularity of the at least one time domain sub-block, and according to the number of start position information and the at least one time domain sub-block included in the time domain resource allocation information, one determining the time domain resource location occupied by the transport block of

Optionally, the method includes: other than the first time domain sub-block, according to predefined rule(s) and at least one of a position of a start symbol, a symbol length and a position of an end symbol in the first time domain sub-block determining a time domain location of a time domain sub-block of

Optionally, the predefined rules include one or more of the following:

In consecutive N time units, each time domain sub-block occupies the same symbol assignment, where N is a positive integer;

Determine, according to the start position information and the length information, the symbol allocation occupied by the first time domain sub-block, and occupy N consecutively subsequent symbols available for data transmission.

Here, each sub-block occupies the same symbol allocation, and the symbol allocation includes the same starting position and symbol length.

Here, the symbols usable for data transmission include any one of symbols usable for uplink data transmission, symbols usable for downlink data transmission, and symbols usable for sidelink data transmission.

Optionally, the manner of indicating the start symbol position in the first time unit and/or the total symbol length occupied by one transmission of the transport block includes at least one of the following:

a method of constructing a TDRA table by radio resource control RRC to configure a start symbol position and a total symbol length occupied by one transmission of a transport block;

A method of jointly encoding the starting symbol position and the total symbol length occupied by one transmission of a transport block and displaying it in the TDRA table.

Optionally, according to the resource allocation information, determining at least one time domain sub-block, wherein, according to the resource allocation information, determining the at least one time domain sub-block comprises:

determining, according to the resource allocation information, a size of a time domain sub-block as L symbols or L time units, wherein L is a positive integer; and

determining, according to the resource allocation information, a granularity of at least one time domain sub-block;

According to the time domain resource allocation information, the granularity of the first time domain sub-block for determining the starting position is Q symbols or Q time units, and the granularity of the second time domain sub-block for determining the transmission length is Q symbols or Q time units. It is determined that the granularity is M symbols or M time units, where Q and M are positive integers.

Optionally, according to the resource allocation information, determining the granularity of the at least one time domain sub-block comprises:

determine the granularity of at least one time domain sub-block according to a subcarrier interval in the resource allocation information and a corresponding relationship between the granularity of the time domain sub-block and the subcarrier interval, predefined or configured by the base station to do;

or according to the granularity of the frequency domain resource sub-block in the resource allocation information, and the corresponding relationship between the granularity of the frequency domain resource sub-block and the granularity of the sub-block, predefined or configured by the base station. , determining the granularity of the at least one time domain sub-block.

Optionally, according to the resource allocation information, the method of determining the number of subcarriers in the at least one sub-physical resource block includes at least one of the following:

a manner of determining, according to the information for indicating the number of subcarriers in the at least one sub-physical resource block in the resource allocation information, the number of subcarriers in the at least one sub-physical resource block;

a method of determining the number of subcarriers in at least one sub-physical resource block according to information indicating a size of a bandwidth part (BWP) or a size of a bandwidth occupied by the BWP in the resource allocation information;

a method of determining the number of subcarriers in the at least one sub-physical resource block according to information indicating a subcarrier interval in the resource allocation information and bandwidth information of the at least one sub-physical resource block;

Subcarriers in at least one sub-physical resource block according to information for indicating, in the resource allocation information, the number of symbols allocated in the time domain for transmission of one transport block or the number of symbols in a time domain unit Step-by-step method to determine the number of.

Optionally, according to the number of subcarriers in the at least one sub-physical resource block, determining a frequency domain resource location occupied by one transport block comprises:

determining a start position of a frequency domain resource occupied by one transport block according to the number of subcarriers in a first sub-physical resource block among the number of subcarriers in the at least one sub-physical resource block;

and determining the size of a frequency domain resource occupied by one transport block according to the number of subcarriers in a second sub-physical resource block among the number of subcarriers in the at least one sub-physical resource block. do.

The technical solutions provided in the embodiments of the present application have at least the following beneficial effects:

The method includes receiving resource allocation information; determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, one transmission of occupies a plurality of time units; and/or determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and, according to the number of subcarriers in the at least one sub-physical resource block, the one determining a frequency domain resource location occupied by a transport block, wherein the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block. The present application achieves more efficient resource allocation for transmitting transport blocks.

For content not described in detail in the UE provided in the embodiment of the present application, the above resource determination method may be referred to. The beneficial effects that can be obtained by the UE provided in the embodiments of the present application are the same as those of the above-described resource determination method, so this will not be repeated below.

Based on the same inventive concept of Embodiment 1, the embodiment of the present application further provides a base station. A schematic structural diagram of the base station is shown in FIG. 14 . The base station 1400 includes a third processing module 1401 and a fourth processing module 1402 .

the third processing module 1401 is configured to transmit resource allocation information;

The fourth processing module 1402 determines, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block. and one transmission of one transport block occupies a plurality of time units; and/or

A fourth processing module 1402 determines, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and according to the number of subcarriers in the at least one sub-physical resource block, the and determine a frequency domain resource location occupied by one transport block, wherein the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block.

The technical solutions provided in the embodiments of the present application have at least the following beneficial effects:

A more efficient resource allocation for transmission of transport blocks is achieved.

For content not described in detail in the base station provided in the embodiment of the present application, reference may be made to the resource determination method. The beneficial effects that can be achieved by the base station provided in the embodiment of the present application are the same as the above-described resource determination method, so this will not be repeated.

Based on the same inventive concept, the embodiments of the present application further provide a UE. A schematic structural diagram of the UE is shown in FIG. 15 . The UE 1500 includes at least one processor 1501 , a memory 1502 , and a bus 1503 . each of the at least one processor 1501 is electrically coupled to a memory 1502; The memory 6002 is configured to store at least one computer-executable instruction, and the processor 1501 executes the at least one computer-executable instruction to execute any one or optional implementation of Embodiment 1 of the present application. and perform the step of any one of the resource determination methods provided in any one of the examples.

Also, the processor 1501 may be a field-programmable gate array (FPGA) or other device having a logic processing function such as a microcontroller unit (MCU) and a central process unit (CPU).

Applying the embodiments of the present application has at least the following beneficial effects:

The method includes receiving resource allocation information; determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, one transmission of occupies a plurality of time units; and/or determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and, according to the number of subcarriers in the at least one sub-physical resource block, the one determining a frequency domain resource location occupied by a transport block, wherein the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block. The present application achieves more efficient resource allocation for transmitting transport blocks.

Based on the same inventive concept, an embodiment of the present application further provides a base station. A schematic structural diagram of the base station is shown in FIG. 16 . The base station 1600 includes at least one processor 1601 , a memory 1602 , and a bus 1603 . each of the at least one processor 1601 is electrically coupled to a memory 1602; The memory 1602 is configured to store at least one computer-executable instruction, and the processor 1601 executes the at least one computer-executable instruction to execute any one or optional configured to perform the steps of the method for determining a provided resource in any one of the embodiments.

Also, the processor 1601 may be a field-programmable gate array (FPGA) or other device having a logic processing function, such as a microcontroller unit (MCU) and a central process unit (CPU).

Application of the embodiments of the present application has at least the following beneficial effects:

The method includes receiving resource allocation information; determining, according to the resource allocation information, a time domain resource location occupied by one transmission of one transport block and/or a total symbol length occupied by one transmission of one transport block, one transmission of occupies a plurality of time units; and/or determine, according to the resource allocation information, the number of subcarriers in the at least one sub-physical resource block, and, according to the number of subcarriers in the at least one sub-physical resource block, the one determining a frequency domain resource location occupied by a transport block, wherein the number of subcarriers in the at least one sub-physical resource block is less than the number of subcarriers in the one physical resource block. The present application achieves more efficient resource allocation for transmitting transport blocks.

Example 2

In some scenarios, to improve the coverage performance, the AL needs to be higher. However, if the AL of the PDCCH is large and mapped to the CORESET region, the PDCCH blocking probability may be increased. In order to reduce PDCCH blocking, in the present invention, L1 CCEs of one PDCCH are distributed to a plurality of CORESET regions (or referred to as “distributed to a plurality of SS regions”), and one CORESET or SS region (hereinafter referred to as an SS region) ), it is proposed that only a part of the resource is occupied by the same PDCCH and the remaining resources are reserved for PDCCHs of other UEs.

17 illustrates an exemplary communication method in accordance with the present disclosure. 17, in step S1701, the UE receives the configuration information of the downlink control channel (PDCCH) transmitted by the base station. The UE determines the mapping information for the mapping relationship between the CCE and the REG and/or the mapping relationship between the CCE and the REG mapped to the SS region in the SS-bundle based on the received configuration information, and the SS-bundle includes a plurality of SS regions. include The information may be directly included in the configuration information of the PDCCH or may be obtained based on a parameter included in the configuration information of the PDCCH, for example, by calculation. The configuration information of the PDCCH is indicated by the broadcast message MIB, the system information SIB, or higher-level signaling common to the cell or dedicated to the UE. In step S1702, the UE receives the PDCCH transmitted by the base station based on the mapping relationship determined based on the configuration information.

For some special-purpose PDCCH configurations, for example, a mapping relationship between CCE and REG and/or a mapping relationship between CCE and REG mapped to an SS region in an SS-bundle is predefined in the standard. For example, the configuration of the PDCCH scheduling system message SIB1 is predefined in the standard.

CCE/REG to SS mapping

According to an embodiment of the present invention, L1 CCEs of one PDCCH may be distributed in a plurality of SS regions. According to whether the CCE is distributed in the plurality of SS regions, it can be divided into two methods.

According to the present disclosure, the plurality of SS regions form an SS-bundle. A plurality of SS regions mapped by one PDCCH belong to the same SS-bundle. Alternatively, the size N_ss of the SS-bundle is determined based on the number of repetitions R of the PDCCH, determined based on the maximum value Rmax that the repetition number R can take, or configured by the base station.

According to an embodiment, one CCE may be mapped to only one SS region, and different CCEs may be distributed and mapped to R_r SS regions where R_r≥1. Regardless of whether the value of R_r is 1 or more, all REGs included in one CCE are located in the same SS region. For example, the mapping information included in the PDCCH transmitted by the base station to the UE indicates that a plurality of CCEs are sequentially mapped to one or more SS regions in the SS-bundle, where each CCE is mapped to one SS region. In the SS region, CCE/REG mapping may be implemented according to the above-described method. For example, an interleaving method based on a REG bundle is performed in one SS region.

An implementation of mapping a plurality of CCEs to R_r SS regions is to generate L1 CCEs and then sequentially map L1 CCEs to SS regions. For one PDCCH, a total of L1 CCEs are included. After the DCI bit undergoes modulation and coding rate matching, L1 CCE-length symbol sequences are obtained. Subsequently, this symbol sequence is mapped to R_r SS regions. 18 shows the mapping from CCE/REG to SS region according to this example. In the example shown in FIG. 18 , L1=4, and after DCI bits undergo modulation and coding rate matching, a symbol sequence of 4 CCE-lengths (including CCE1 to CCE4) is obtained, and then this symbol sequence is 2 It is mapped to SS regions (SS region 1 and SS region 2).

According to this example, R_r SS regions may be taken as a whole, and a starting point of a PDCCH candidate may be determined based on all CCE resources of the R_r SS regions. For example, each SS region has 20 CCEs and two SS regions have a total of 40 CCEs. CCEs may be numbered on the two SS regions in time-before-frequency order, for example, the first CCE in SS region 1 is CCE1 and the first in SS region 2 The th CCE is CCE2, the second CCE in the SS region 1 is CCE3, ..., the tenth CCE in the SS region 1 is CCE19 and the tenth CCE in the SS region 2 is CCE20. When L1=4, the starting point of the first PDCCH candidate is CCE1, and the starting point of the second PDCCH candidate is CCE5.

Another implementation of mapping the plurality of CCEs to the R_r SS regions is to generate L3 CCEs and then map the L3 CCEs to each SS region of the R_r SS regions. In general, L1=L3*R_r, and R_r=R is called the number of repetitions. For one PDCCH, after DCI bits undergo modulation and coding rate matching, L3 CCE-length symbol sequences mapped to one SS region are obtained, and L3 CCE-lengths in the remaining R_r-1 SS regions Each symbol sequence is repeated. That is, the L1 CCEs include repetitions of the CCE subset (L3 CCEs), and the number of repetitions is equal to the number of SS regions in the SS-bundle. Mapping information included in the PDCCH sent by the base station to the UE indicates that a CCE subset (L3 CCEs) is mapped to one SS region, and the CCE subset is repeatedly mapped to each of the other SS regions.

19 shows the mapping from CCE/REG to SS region according to this example. In the example shown in FIG. 19, L1=4, L3=2 and R_r=2. As shown in FIG. 19 , for one PDCCH, after DCI bits undergo modulation and coding rate matching, L32 CCE-length symbol sequences are obtained, which are mapped to one SS region, and L3=2 CCEs. The -length symbol sequence is repeated in different SS regions.

According to this example, the starting point of the PDCCH candidate is determined based on the CCE resource in the SS region. Specifically, the starting point of the PDCCH candidate is determined based on the CCE resource in the first SS region in the SS-bundle, or the first, R_r+1, 2*R_r+1, ... CCE in the SS region, respectively, in the SS-bundle. It may be determined based on resources.

For example, the size of the SS-bundle may be determined according to Rmax=4. There are 20 CCEs in each SS region and a total of 80 CCEs in 4 SS regions. In the case of the PDCCH with R=2 and L3=2, the starting point position of the first PDCCH candidate is determined as the first CCE in the first SS region based on 20 CCEs in the first SS region in the SS-bundle. This PDCCH candidate occupies the first CCE in the first SS region and the first CCE in the second SS region. The starting point position of the second PDCCH candidate is the third CCE in the first SS region. This PDCCH candidate occupies the third CCE in the first SS region and the third CCE in the second SS region.

Alternatively, the base station may configure whether the same precoding matrix is used for the PDCCH repeated sample in the SS regions in the SS-bundle. For example, when the number of repetitions of the PDCCH is R=2, the PDCCH signal of the PDCCH in the two SS regions uses the same precoding matrix. Alternatively, the base station may configure whether REGs in the same frequency domain location in the SS region in the SS-bundle use the same precoder matrix. Alternatively, the base station may configure whether the same beam is used for the PDCCH signal in the SS regions in the SS-bundle.

Alternatively, the base station may configure whether the same precoding matrix is used for the PDCCH repeated samples in the R_ss SS regions in the SS-bundle. The value of R_ss is configured by the base station and R_ss×ss. Alternatively, the base station may configure the REGs in the same frequency domain location in the R_ss SS regions in the SS-bundle to use the same precoding matrix. For example, an SS-bundle contains 4 SS regions, R_ss=2 means that the first and second SS regions have the same precoding matrix, and the third and fourth SS regions have the same precoding matrix means that Alternatively, the base station may configure whether the PDCCH signals in the R_ss SS regions in the SS-bundle use the same beam.

Alternatively, if the base station does not configure the precoding characteristic of the SS region, the UE cannot assume that the same precoding matrix is used for the PDCCH repeated sample in the SS regions.

Alternatively, if the base station does not configure the beam characteristics of SS regions, the UE cannot assume that the same beam is used for PDCCH repeated samples in SS regions.

According to another embodiment of the present disclosure, one CCE may be mapped to N_ss SS regions, and a plurality of CCEs may be mapped to N_ss SS regions, and N_ss≧1.

In this example, N_ss SS regions in one SS-bundle are used as a whole, and L2 REGs of one CCE are mapped to N_ss SS regions in an SS-bundle. When the plurality of SS regions are temporally continuous or close to each other, joint interpolation of DMRSs of the plurality of SS regions may improve channel estimation performance. For example, the size of the REG bundle is set as the sum of the number of OFDM symbols in a plurality of SS regions. When a plurality of SS regions are temporally far apart from each other, joint interpolation of DMRS of a plurality of SS regions does not have a large gain. The size of the REG bundle may be set to the number of OFDM symbols in one SS region, but a plurality of CCEs in one PDCCH are mapped to different SS regions to obtain a time diversity gain.

20 shows the mapping from CCE/REG to SS region according to this example. In the example of FIG. 20 , assuming that the length of the CORESET symbol is 3, the SS-bundle includes two SS regions (SS region 1 and SS region 2). The REG is then within 6 symbols, which can be numbered according to the time-before-frequency rule. CCE1 includes REG1 to REG6. Assume that the size of the REG bundle is L=6. When mapping is performed in the interleaving method, assuming that the interleaving coefficients R_r=2 and AL=2, according to Equation (1), CCE1 and CCE2 correspond to REG1 to 6 and REG37 to 42, respectively. When mapping is performed in an interleaving manner, CCE1 and CCE2 correspond to REG1 to REG1 to REG7 to REG7 to 12, respectively.

20, assuming that the size of the REG bundle is L=3, and the interleaving coefficients R_r=2, AL=2, according to Equation (1), CCE1 corresponds to REG1 to 3 and REG37 to 39, and , CCE2 corresponds to REG4 to 6 and REG40 to 42.

Alternatively, the total number of OFDM symbols in the N_ss SS regions may be an integer multiple of the number L2 of the number of REGs included in one CCE, or may be equally divided by L2.

Alternatively, the total number of OFDM symbols in the N_ss SS regions may be an integer multiple of the size L of the REG bundle or may be divisible by L.

Alternatively, when configuring the SS, the base station configures any of the above methods to determine the REG/CCE mapping method. The base station may determine the most appropriate mapping method based on the time resource of the SS. Alternatively, the base station may determine a REG/CCE mapping scheme according to a predefined rule, for example, a specific SS corresponds to a specific REG/CCE mapping scheme.

In order to obtain the same effect as in the present embodiment, the length of the existing CORESET symbol may be increased. The symbol length of the existing CORESET is 1, 2, or 3. To support larger PDCCH AL or PDCCH repetitions, the symbol length of CORESET may be increased, for example, up to 6 symbols. In one SS region, CCE/REG mapping is performed, that is, all CCEs of one PDCCH are mapped to one SS region.

Alternatively, the starting point of each SS region or PDCCH MO is determined based on the configured SS time resource. The OFDM symbols occupied by each SS region are jointly determined by the CORESET symbol length and semi-statically configured uplink and downlink resources. One implementation is to map CORESET to semi-statically configured downlink symbols and flexible symbols, based on a configured starting point and semi-statically configured uplink and downlink resources. For example, the base station configures the starting point of the SS time resource in the slot with OFDM symbol 1, OFDM symbol 7 (eg, monitoringSymbolsWithinSlot indicates 10000010000000), the CORESET symbol length is 6, and the uplink in slot 1 And assuming that the downlink symbols are composed of DDDDDDDDFUUUUU, and the uplink and downlink symbols in slot 2 are composed of DDDDDDDDDDDDDDDD, the first SS region is symbols 1 to 6 of slot 1, and the second SS region is that of slot 1. symbols 7 and 8 and symbols 1 to 4 of slot 2. Another implementation is to determine the starting point and the ending point of the SS region based on the configured starting point and the CORESET symbol length, where the semi-statically configured symbol as an uplink resource cannot be used and the PDCCH cannot be transmitted. In the above example, the first SS region is symbols 1 to 6 of slot 1, and the second SS region is symbols 7 and 8 of slot 1.

Relationship between SS-Bundle and SS Resource Duration

In order to reduce the time delay, contiguous or temporally close SS regions should be combined into one SS-bundle as much as possible. SS regions are sorted chronologically. ie SS regions 1, 2, 3, 4 .... SS-bundle of size Rmax comprises SS regions j, j+1, ...j+Rmax-1, where j is (j-1) satisfies mod Rmax 0 (j starts counting from 1).

Alternatively, the SS regions forming one SS-bundle belong to the same SS.

Alternatively, the SS regions forming one SS-bundle may belong to different SSs. For example, an SS-bundle includes four SS regions, which belong to SSs having SS index 1, SS index 2, SS index 3 and SS index 4. A plurality of SS indexes corresponding to one SS-bundle are configured by the base station. In particular, for one SS-bundle, the base station configures only one SS and the SS regions belong to the same SS. Also, for example, SS indices of SS regions in the SS-bundle may be determined according to a predefined rule. For example, in chronological order, four adjacent SS regions form an SS-bundle, and based on the configured SS index and time resource, an SS to which the four SS regions belong is determined. Also, only certain SSs can be combined to form an SS-bundle. For example, SS regions of a plurality of SSs having the same SS type may be combined to form an SS-bundle. For example, the SS type is UE-specific SS, Type-0 Common Search Space (CSS), or the like.

Alternatively, the SS regions forming one SS-bundle may be associated with a plurality of CORESETs. A plurality of CORESETs corresponding to one SS-bundle may be configured by the base station, or a plurality of CORESETs and SSs corresponding to one SS-bundle may be configured by the base station. Also, for example, CORESETs or CORESETs and SSs of SS regions in the SS-bundle are determined according to a predefined rule. In addition, specific CORESETs or only CORESET and SS may be combined to form an SS-bundle.

According to an example, the size of each SS-bundle is the same, and SS regions located within two periods cannot form an SS-bundle. For example, assuming that the period of SS is 10 slots, SS contains the 1st to 2nd symbols and 7th to 8th symbols of each slot of the 1st to 3rd slots within each period, that is, the time resource of SS are the 1st to 2nd symbols and 7th to 8th symbols of slots 1 to 3, slots 11 to 13, slots 21 to 23, and slots 31 to 33, respectively. Every two adjacent symbols is an SS region. Then, in one period, there are 6 SS regions. Assume that SS-bundle contains 4 SS regions, SS-bundle 1 is the first 4 SS regions of the first period and SS-bundle 2 is the first 4 SS regions of the second period. The remaining two SS regions of each period cannot combine with the SS regions of the next period to form an SS-bundle.

According to another example, in order to make the most of each SS region, the length of each SS-bundle may be different, eg, adjusted according to the number of remaining SS regions in one period. In the example above, SS-bundle 1 may be the first four SS regions of the first period, and SS-bundle 2 may be the last two SS regions of the first period. SS-bundle 3 may be the first four SS regions of the second period, and SS-bundle 4 may be the last two SS regions of the second period. In the SS-bundle, the number of repetitions of the PDCCH is less than or equal to the number of SS regions included in the SS-bundle. For example, SS-bundle 1 may include R_r=1, 2 or 4 PDCCH candidates, and SS-bundle 2 may include R_r=1 or 2 PDCCH candidates.

Alternatively, the UE assumes that the number of SS regions in each period configured by the base station is an integer multiple of the SS-bundle size. Accordingly, it is possible to ensure that the length of each SS-bundle is the same, thereby avoiding the above-mentioned problem that the lengths of the SS-bundles are different.

According to another example, the size of each SS-bundle is the same, and SS regions located within two periods may form an SS-bundle. In the example above, SS-bundle 1 may be the first 4 SS regions of the first period, SS-bundle 2 may be the last 2 SS regions of the first period and the first 2 SS regions of the second period, and , SS-bundle 3 may be the last four SS regions of the second period. In a specific implementation, the base station may avoid scheduling the PDCCH to be mapped to SS regions belonging to different periods. Taking SS-bundle 2 as an example, in the case of a PDCCH whose repetition count is 2, the base station transmits this PDCCH in the last two SS regions in the first period, or transmits this PDCCH in the first two SS regions in the second period. can send

According to another example, in order to obtain a time diversity gain, SS regions that are not temporally contiguous may be combined into an SS-bundle. The time interval of SS regions may be configured by the base station. For example, the SS-bundle includes 4 SS regions, and the time interval of the SS region is 1 slot. Assuming that the time resources of the SS are slots 1 to 4, slots 11 to 14, slots 21 to 24, slots 31 to 34, ... respectively, the 1st and 2nd symbols and the 7th and 8th symbols, the The SS regions of the 1st to 2nd symbols of each slot form SS-Bundle 1, the SS regions of the 7th to 8th symbols of each slot of Slots 1-4 form SS-Bundle 2, The SS regions of the first to second symbols of each slot form SS-bundle 3, and so on.

Relationship between SS-Bundle and Slot Format Dynamic Indicator

For example, to avoid DCI indication of uplink and downlink resources, a reception error of the slot format indicator (SFI) results in confusion of the SS-bundle. Regardless of the dynamic indicator SFI, SS regions forming an SS-bundle may be determined based on a semi-statically configured time resource. A semi-statically configured time resource is an SS time resource. Alternatively, the semi-statically configured time resource further includes at least one of a cell common uplink and downlink configuration, a UE specific uplink and downlink configuration, or a RateMatchPattern. For example, the SS-bundle is determined based on the maximum number of iterations that can be supported (Rmax). For Rmax=4, the SS-bundle contains 4 adjacent SS regions. Semi-static signaling is the time resource of one SS, 1st to 2nd symbol (SS region 1), 5th to 6th symbol (SS region 2), 9th to 10th symbol (SS region 3) in a slot and 13th to 14th symbols (SS area 4). Regardless of whether the SFI does not indicate that one or more of the four SS regions belong to the downlink symbols, the SS-bundle contains these four SS regions.

According to one implementation, the UE assumes that all OFDM symbols in the SS regions in the SS-bundle are available, regardless of whether the SFI indicates that these OFDM symbols are downlink symbols. The UE must monitor the PDCCH in these SS regions based on the configuration of the base station.

According to one implementation, if some or all of the OFDM symbols in one or more SS regions in the SS-bundle are not represented by the SFI as downlink symbols, for example as uplink symbols or flexible symbols, In this case, the UE will consider these resources not available. If some of the resources corresponding to one PDCCH mapped to this SS-bundle are not available, the UE does not need to monitor this PDCCH. For example, referring to the example of FIG. 22 , when the SFI indicates that the SS region 3 and the SS region 4 belong to flexible symbols, according to the method of determining the SS based on the repeated PDCCH shown in FIG. 22 , in the case of this SS-bundle, since the SS regions 3 and 4 to which PDCCH candidates with a repetition count of 4 are mapped cannot be used, the UE does not need to monitor PDCCH candidates with a repetition count of 4. Similarly, the UE does not need to monitor PDCCH candidates with repetition count of 2 and starting point in SS region 3 and PDCCH candidates with repetition count 1 and starting point in SS region 3 or 4.

According to another implementation, if some or all of the OFDM symbols in one or more SS regions in the SS-bundle are not indicated by the SFI as downlink symbols, for example as uplink symbols or flexible symbols. If so, the UE considers these resources to be unavailable. If some of the resources corresponding to one PDCCH mapped to this SS-bundle are not available, the UE should still monitor this PDCCH, but assume that the base station does not transmit the corresponding PDCCH signals for these resources . For example, referring to the example of FIG. 22 , when the SFI indicates that the SS region 3 belongs to the flexible symbol, according to the method of determining the SS based on the repeated PDCCH shown in FIG. 22, the base station SS- If the UE is configured to monitor a PDCCH candidate with AL=4 and R_r=4 in the bundle, the UE still needs to monitor this PDCCH candidate, similar to that the PDCCH signal of SS region 3 is punctured, It is assumed that the base station transmits only corresponding PDCCH signals in SS regions 1, 2 and 4.

According to another implementation, when the number of repetitions is greater than a predefined threshold (eg R_r>1), some or all of the OFDM symbols in one or more SS regions in the SS-bundle are downlink symbols by SFI. Whether or not marked as , the UE considers these resources to be available. The UE still attempts to monitor the PDCCH for these resources. Alternatively, the threshold may be configured by the base station, for example. Alternatively, the threshold is predefined by the base station.

Also, considering that different SS or CORESET application scenarios are different, a method of processing an SS region including uplink signals or flexible signals may be different. The base station may configure CORESET or SS to use one of the above methods, or may pre-define which type of SS will use which method by standard.

According to another implementation, in order to avoid confusion of the SS-bundle due to a reception error of the SFI, the semi-statically configured SS resources configured by the base station do not belong to semi-statically configured uplink symbols or flexible symbols. , belongs only to downlink symbols. Accordingly, the UE may determine the SS region based on the same assumption. The SFI cannot rewrite the semi-statically configured downlink symbols, and the UE does not expect the configured SS region to be represented by the SFI as an uplink symbol or a flexible symbol. In addition, the UE considers the configured SS region as a valid resource regardless of whether SFI is received or not.

According to an embodiment of the present disclosure, in order to improve flexibility of control channel resource allocation, according to a specific DCI indication, it may be determined whether a semi-statically configured SS region is valid, and based on the valid SS regions, the SS bundles can be formed. If some or all of the OFDM symbols in one or more SS regions within the SS bundle are not represented by SFI as downlink symbols, for example, if they are represented by uplink symbols or flexible symbols, the UE Resources are considered unavailable and SS regions containing these resources are considered invalid. For example, the SS bundle is determined based on the maximum number of iterations (Rmax) that can be supported. When Rmax=4, the SS-bundle contains 4 adjacent SS regions. As shown in FIG. 21 , the SFI indicates that SS regions 2 to 4 are flexible symbols. And, the SS bundle includes SS region 1, SS region 5, SS region 6 and SS region 7, which are four valid SS regions.

In the case of SS, the starting point of the SS-bundle may be determined based on the time domain resource of the SS and the maximum number of repetitions Rmax. In addition, the starting point of the SS-bundle may also be determined based on the reference time domain resource. For example, using the reference time domain resource as a starting point, the first SS area of the most recent time resource of the SS is recorded as the SS area 1. The SS regions of the SS are arranged in chronological order as SS regions 1, 2, 3, 4, 5, 6, 7, 8 .... respectively. The starting point of each SS-bundle is the SS region j, where j satisfies (j-1) mod Rmax =0. In the two methods described above, one is to determine a valid SS region index based on semi-statically configured SS parameters, and the other is to determine a valid SS region index based on semi-statically configured SS parameters and SFI. It is not difficult to confirm that it does.

To achieve a trade-off between flexibility and robustness in control channel resource allocation, for example, for a particular search space or CORESET, the SS regions forming the SS-bundle are semi-statically configured SS, irrespective of SFI indications. can be determined based on The specific search space is, for example, a common search space (CSS), or a specific CSS for receiving, for example, SFI PDCCH, SI-RNTI scrambled PDCCH, RA-RNTI scrambled PDCCH and/or P-RNTI scrambled PDCCH, or , or a specific CORESET (eg, CORESET0). For other search spaces or CORESETs (eg, UE specific search space (USS)), the SS regions forming the SS-bundle may be determined based on the semi-static configuration and SFI.

Further, if some or all of the frequency domain resources of some or all of the OFDM symbols in one or more SS regions in the SS-bundle are marked as unavailable for PDCCH transmission, the UE considers these resources unavailable. . For example, if some of the frequency domain resources are used to synchronize the signal/broadcast channel block SS/PBCH Block, or are indicated as reserved resources, these resources cannot be used for PDCCH transmission. It is assumed that if some of the resources corresponding to the PDCCH are not available, the UE still needs to monitor the PDCCH, but the base station does not transmit the corresponding PDCCH signals for these resources. For example, in 4 SS regions in an SS-bundle, it is assumed that some of PRBs in SS region 2 are indicated by SS/PBCH block resources. If the PDCCHs are mapped to these resources, it is assumed that the UE receives these PDCCHs and the base station does not transmit PDCCH signals for these resources. Or, the UE still needs to detect this PDCCH, but the UE does not monitor the PDCCH repetition samples in SS regions that contain these unavailable resources. For example, in four SS regions in an SS-bundle, it is assumed that some of the PRBs of SS region 2 are represented by SS/PBCH block resources. When a PDCCH having a repetition number of 4 is mapped to four SS regions, the UE receives this PDCCH in SS regions 1, 3, and 4, assuming that there are no repeated samples of this PDCCH in SS region 2. Alternatively, the UE does not need to monitor this PDCCH. For example, in four SS regions in an SS-bundle, it is assumed that some of PRBs in SS region 2 are indicated by SS/PBCH block resources. When a PDCCH having a repetition number of 4 is mapped to 4 SS regions, the UE does not attempt to receive the PDCCH.

The above-described method of forming the SS-bundle may be applied to two REG/CCE mapping methods described in the present disclosure.

PDCCH Candidate Positioning Method

In order to map the PDCCH to the SS-bundle, it is necessary to determine which SS regions in the SS-bundle to map R_r times according to a predefined method. For convenience of description, this method is referred to as a method of determining an SS based on a repeated PDCCH. A method of determining an SS based on the repeated PDCCH includes a method of determining a starting point of a PDCCH candidate in an SS-bundle.

According to the exemplary determination method, in the SS-bundle, starting from the first SS region, the position of each PDCCH candidate is determined based on the number of repetitions R_r, and starting from the first PDCCH candidate, the positions of D PDCCH candidates are is determined, and the D PDCCH candidates are consecutive. D is configured by the base station or predefined by the standard. For example, the SS-bundle includes Rmax SS regions, and the starting point of PDCCH candidates having the number of repetitions R_r is initially located in the R_r+1, ... 2*R_r+1 SS region. As shown in FIG. 22 , according to Rmax=4, four adjacent SS regions are determined as an SS-bundle, and the value range of R_r is 1, 2 or 4. When the R_r value of the PDCCH candidate is 1, the starting point may be any one of four SS regions of the SS-bundle. When the R_r value of the PDCCH candidate is 2, the starting point may be the first SS region of the SS-bundle or the third SS region of the SS-bundle. When the R_r value of the PDCCH candidate is 4, the starting point is the first SS region of the SS-bundle. Assuming that the base station configures D=1 among PDCCH candidates as R_r=1, the UE only needs to detect positions of PDCCH candidates mapped to SS region 1 starting from SS region 1. When D=2 of the PDCCH candidates has R_r=1, the UE determines the positions of PDCCH candidates mapped to SS region 1 starting from SS region 1 and the positions of PDCCH candidates mapped to SS region 2 starting from SS region 2 You just need to detect it.

According to another exemplary determination method, in the SS-bundle, starting from the first SS region, the position of each PDCCH candidate is determined based on the number of repetitions R_r, where, starting from the first PDCCH candidate, D PDCCH candidates is determined, and the D PDCCH candidates are discontinuous. In this example, the distance between adjacent PDCCH candidates is as far apart as possible. For example, for PDCCH candidates with R_r=1, there are 4 candidate positions in the SS-bundle. As shown in FIG. 23 , when D=2, positions of PDCCH candidates to be detected by the UE are first and third candidate positions in order. The mapping method according to this example can reduce PDCCH blocking to some extent. The base station may allocate and configure the most suitable mapping method according to different CORESET or SS application scenarios.

Alternatively, according to an exemplary embodiment, when configuring CORESET or SS, the base station configures the number of repetitions it can support. In addition, when configuring CORESET or SS, the base station configures a combination of the number of repetitions and AL. When a base station configures multiple CORESETs or SSs for a UE, the base station configures for multiple CORESETs or SSs, respectively, which can support different number of repetitions of CORESETs or SSs and different combinations with ALs .

Alternatively, when configuring CORESET or SS, the base station configures a method for determining SS based on the repeated PDCCH.

The communication method of the present disclosure described above is described from the perspective of the UE.

Correspondingly, according to another aspect of the present disclosure, a communication method performed by a base station includes: transmitting, by the base station, configuration information of a PDCCH, wherein the configuration information includes a mapping relationship between CCE and REG and a mapping relationship between CCE and UE can be used to determine mapping information for a mapping relationship between REGs mapped to an SS region in an SS-bundle by -; and transmitting, by the base station, the PDCCH based on the mapping information determined from the configuration information of the PDCCH, wherein the mapping of the PDCCH from the CCE to the REG and the mapping from the REG/CCE to the SS region is determined based on the configuration information. .

In addition, the UE determines resource information for receiving a Physical Downlink Shared Channel (PDSCH) based on the received PDCCH.

Determining the starting point of DSCH

When the UE receives the PDSCH, it is generally necessary to receive the PDCCH first, and according to the indication of the PDCCH, resource information of the PDSCH, for example, the slot in which the PDSCH is located, the OFDM symbol index within the slot, and the symbol length are determined do.

According to an aspect of the present disclosure, when the number of repetitions of the PDCCH for scheduling the PDSCH is R>1, a method of selecting a reference view and/or determining a slot and/or a symbol in which the PDSCH is located is also proposed.

According to an embodiment of the present disclosure, the slot in which the last symbol of the R-th transmission of the PDCCH is located is used as a reference time, and the slot in which the PDSCH is located is determined based on the slot offset KO indicated in the PDCCH. For example, the number of repetitions of the PDCCH is R=4, which is the first 3 symbols of slot n, the last 3 symbols of slot n, the first 3 symbols of slot n+1, and the last 3 symbols of slot n+1. is located in Then, based on the position of the fourth PDCCH, it is determined to receive the PDSCH in the slot n+1+K0 with reference to the starting point of the slot n+1. Alternatively, the starting point of the slot in which the first symbol of the R-th transmission of the PDCCH is located is used as the reference time. To avoid misinterpretation of the R value by the UE, the base station may indicate or implicitly indicate the R value. For example, the R value may be indicated in DCI. According to different Rs, a different PDCCH starting point or a different scrambling code, etc. may be determined.

According to another embodiment of the present disclosure, the starting point or the ending point of the last symbol of the PDCCH candidate determined according to Rmax is the reference time slot. For example, when Rmax = 4, the time resources of the PDCCH candidates determined according to Rmax are respectively the first 3 symbols of slot n, the last 3 symbols of slot n, the first 3 symbols of slot n+1, and slot n+ It is located in the last 3 symbols of 1. The actual number of repetitions of DCCH is 2, which is located in the first 3 symbols of slot n and the last 3 symbols of slot n. According to the position of the fourth PDCCH, it is determined based on the starting point of the slot n+1, and the PDSCH is received in the slot n+1+K0. The advantage of this method is that the UE can determine the reference slot without error, regardless of whether the UE has correctly obtained the R value.

According to another aspect of the present disclosure, the end position of the last symbol of the R-th transmission of the PDCCH or the end position of the first symbol of the R-th transmission of the PDCCH, or the end position of the last symbol of the PDCCH candidate determined according to Rmax, or at Rmax The end position of the first symbol of the Rmax repetition sample of the PDCCH candidate determined according to the determined PDCCH candidate is used as a symbol level reference. Alternatively, the UE does not expect the start symbol of the PDSCH to be earlier than the reference symbol. This has the advantage that the UE does not need to store many downlink signals before decoding the PDCCH, but only starts storing downlink signals before and after the last repetition of the PDCCH for receiving the PDSCH.

The present disclosure also discloses a base station and a UE suitable for implementing the communication method of the present disclosure.

24 depicts a simplified block diagram of an entity 2400 suitable for practicing multiple example embodiments of the present disclosure. The entity 2400 may be configured as a network-side device, such as a base station, and the entity 2400 may also be configured as a user-side device, such as a user terminal (UE).

24 , entity 2400 includes a processor 2401 , a memory 2402 coupled to the processor 2401 , and an appropriate radio frequency (RF) transmitter/receiver 2404 coupled to the processor 2401 . includes The memory 2402 stores the program 2403 . The transmitter/receiver 2404 is suitable for two-way wireless communication. It should be noted that the transmitter/receiver 2404 has at least one antenna to support communication, and in practice, a base station or UE may have multiple antennas. Entity 2400 may be coupled to one or more external networks or systems via a data path, such as the Internet.

Program 2403 may include program instructions, which, when executed by associated processor 2401 , cause entity 2400 to operate in accordance with exemplary embodiments of the present disclosure.

Embodiments of the present disclosure may be implemented by computer software that may be executed by the processor 2401 of the entity 2400 , or by hardware, or by a combination of software and hardware.

Memory 2402 may be any suitable type of memory suitable for the local technology environment, and may be any suitable type of memory, such as semiconductor-based storage devices and systems, magnetic storage devices and systems, optical storage devices and systems, fixed memory and removable memory. It may be implemented using data storage techniques (these are just non-limiting examples). Although only one memory is shown in entity 2400 , entity 2400 may have a plurality of physically independent storage units. Processor 2401 may be any suitable type of processor suitable for the local technological environment, and may include one or more of the following: general purpose computers, dedicated computers, microprocessors, digital signal processors (DSPs), and multi-core processor architectures. based processor (these are only non-limiting examples).

When entity 2400 is configured as a network-side device, ie, entity 2400 is a base station, in some embodiments the transmitter of transmitter/receiver 2404 is under the control of processor 2401 in various embodiments of the present disclosure. configured to transmit a PDCCH to the UE according to the

The transmitter of the transmitter/receiver 2404 is further configured to receive information transmitted by the UE based on the received PDCCH under the control of the processor 2401 .

When entity 2400 is configured as a user-side device, ie, entity 2400 is a UE, in some embodiments the receiver of transmitter/receiver 2404 is configured to receive a PDCCH from a base station under the control of processor 2401 . is composed

A transmitter of the transmitter/receiver 2404 is configured to transmit information based on the received PDCCH.

It should be understood that the units included in entity 2400 are configured to practice the example embodiments disclosed herein. Accordingly, the operations and features described above with reference to FIGS. 17 to 23 may be equally applied to the entity 2400 and units therein, and a detailed description thereof will be omitted.

In addition, although the present disclosure has been described taking the UE receiving the PDCCH from the base station as an example, it should be understood that the UE is not limited to the case where the UE is a receiver and the base station is a transmitter. Alternatively, in some embodiments, the first base station may also receive the PDCCH from the second base station, according to the technical solution of the present disclosure. In this case, the first base station as the receiver performs the operation of the UE described in the present disclosure, and the second base station as the transmitter performs the operation of the base station described in the present disclosure. As another option, in some embodiments, the PDCCH may also be received by the first UE from the second UE, according to the technical solution of the present disclosure. In this case, the first UE as the receiver performs the operation of the UE described in the present disclosure, and the second UE as the transmitter performs the operation of the base station described in the present disclosure. That is, the PDCCH receiver of the technical solution described in this disclosure is not limited to the UE, and the PDCCH transmitter is not limited to the base station. Embodiments of the present disclosure may be applied as long as a scenario in which one party needs to receive a PDCCH from the other party.

In another aspect, the present disclosure also provides a computer-readable storage medium. The computer-readable storage medium is a computer-readable storage medium included in a base station or a communication device in the above-described embodiments; or a stand-alone computer-readable storage medium not assembled to an apparatus. A computer-readable storage medium stores one or more programs. The program, when executed by one or more processors, performs the communication method described in this disclosure.

The above descriptions are only preferred embodiments of the present disclosure and are only descriptions of applied technical principles. A person of ordinary skill in the art will recognize that the scope of the invention related to the present disclosure is not limited to the technical solution formed by a specific combination of the technical features, and the technical features or their equivalents without departing from the concept of the present invention It should be understood that other technical solutions formed by any combination of features should also be included. For example, a technical solution formed by replacing the above features with technical features disclosed in the present invention (but not limited thereto) but having similar functions.

The above description is only a part of implementation of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present disclosure. Such improvements and modifications are also considered to fall within the protection scope of the present disclosure.

Claims (15)

A method for receiving a Physical Downlink Control Channel (PDCCH), comprising:
receiving configuration information of the PDCCH;
determining resource mapping from a control channel element (CCE) of the PDCCH to one or a plurality of search space (SS) regions based on the configuration information; and
Receiving the PDCCH based on the resource mapping
A method comprising The method of claim 1,
Based on the configuration information, among information indicating whether a mapping from a resource element group (REG) to the CCE, a mapping from a PDCCH candidate to the SS region, and whether precoders or beams in the plurality of SS regions are the same The method further comprising determining at least one. The method of claim 1,
The plurality of SS regions form one SS-bundle, and a plurality of CCEs of one PDCCH are mapped to a plurality of SS regions belonging to the same SS-bundle. 4. The method of claim 3,
wherein the plurality of SS regions forming one SS-bundle belong to the same SS or belong to different SSs. 4. The method of claim 3,
a plurality of SS regions forming one SS-bundle belong to the same SS period, and the size of each SS-bundle is the same or different;
Wherein the size of each SS-bundle is the same, the number of SS regions in each SS period is an integer multiple of the size of each SS-bundle. 4. The method of claim 3,
A method, wherein a plurality of SS regions forming one SS-bundle are determined by information about a semi-statically configured time resource. 7. The method of claim 6,
PDCCH monitoring is performed for the plurality of SS regions forming one SS-bundle;
PDCCH monitoring is not performed on a resource indicated as a non-downlink symbol in the plurality of SS regions forming one SS-bundle;
Under the assumption that there is no PDCCH signal on a resource indicated as a non-downlink symbol in the plurality of SS regions forming one SS-bundle, PDCCH monitoring for the plurality of SS regions forming one SS-bundle How this is done. 4. The method of claim 3,
said SS-bundle is formed by a plurality of effective SS regions,
All symbols are semi-statically configured as downlink symbols, or
The SS regions indicated as downlink symbols by the Slot Format Indicator (SFI) are valid SS regions. 9. The method according to claim 6 or 8,
for the first type of SS, the SS regions of the SS-bundle are determined based on the semi-statically configured SS regions;
For the second type of SS, the SS regions of the SS-bundle are determined based on the semi-statically configured time resource and SFI (Slot Format Indicator). 4. The method of claim 1 or 3,
In the resource mapping determined based on the configuration information, all REGs of any CCE of one PDCCH are mapped to the same SS region, and at least two CCEs of one PDCCH are mapped to different SS regions in one SS-bundle. How to show that you are. 4. The method of claim 1 or 3,
The resource mapping determined based on the configuration information,
A plurality of REGs of one CCE of one PDCCH are mapped to a plurality of SS regions in one SS-bundle,
Indicate that the plurality of CCEs of one PDCCH are mapped to the plurality of SS regions in one SS-bundle. The method of claim 1,
determining a reference time and a slot offset based on the received PDCCH; and
The method further comprises receiving a Physical Downlink Shared Channel (PDSCH) based on the reference time and the slot offset,
The reference time is
the starting point of the slot in which the last symbol of the last PDCCH repetition in the time domain is located;
The start or end point of the slot in which the last symbol of the PDCCH candidate determined based on the maximum number of repetitions is located, or
End position of the last symbol of the last PDCCH repetition in the time domain or the end position of the first symbol of the last PDCCH repetition in the time domain
One of them, the method. A communication device comprising:
transceiver; and
A processor comprising:
Receive configuration information of the PDCCH,
determining resource mapping from a control channel element (CCE) of the PDCCH to one or a plurality of search space (SS) regions based on the configuration information;
and receive the PDCCH based on the resource mapping. A method for transmitting a Physical Downlink Control Channel (PDCCH), comprising:
determining resource mapping from a control channel element (CCE) of the PDCCH to one or a plurality of search space (SS) regions;
transmitting configuration information of the PDCCH according to the determination; and
Transmitting the PDCCH based on the resource mapping
A method comprising A communication device comprising:
transceiver; and
A processor comprising:
determining resource mapping from a control channel element (CCE) of the PDCCH to one or a plurality of search space (SS) regions;
Transmitting the configuration information of the PDCCH according to the determination,
and transmit the PDCCH based on the resource mapping.

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